| Last Name | First Name | Address | City | Telephone | Misc | Page # | Month | Year |
| Mackey | E | Berry Add | Alturas | Red | 491 | 4 | June | 1948 |
| Maher | James | 1515 East | Alturas | Black | 562 | 4 | June | 1948 |
| Maita Bros Ranch | Alturas | 14-F-12 | 4 | June | 1948 | |||
| Mapes | C W Jr | 1613 East | Alturas | Red | 1342 | 4 | June | 1948 |
| Mapes | James C | No 21 Vets Unit | Alturas | Black | 2492 | 4 | June | 1948 |
| Marr | U B | East | Alturas | Red | 1623 | 4 | June | 1948 |
| Marr's Clothing Store | 1001 Main | Alturas | Main | 1051 | 4 | June | 1948 | |
| Marshall | W C | Alturas | Red | 1702 | 4 | June | 1948 | |
| Marshall Henry Body Shop | 1304 W Eighth | Alturas | Red | 451 | 4 | June | 1948 | |
| Marsters | Harold | Estes | Alturas | Black | 1211 | 4 | June | 1948 |
| Masonic Temple | Alturas | Black | 1062 | 4 | June | 1948 | ||
| Mathews | Bill | Fourth | Alturas | Black | 1402 | 4 | June | 1948 |
| Mathews | N G | Riverside | Alturas | Black | 902 | 4 | June | 1948 |
| May | Tom | Howard | Alturas | Black | 892 | 4 | June | 1948 |
| McArthur Floyd Pontiac | 2104 Main | Alturas | Main | 2401 | 4 | June | 1948 | |
| McCartor | Horace | Third | Alturas | Black | 1774 | 4 | June | 1948 |
| McCaughan | A W | E Fourth | Alturas | Red | 982 | 4 | June | 1948 |
| McCaughan's Grocery | Twelfth | Alturas | Black | 2292 | 4 | June | 1948 | |
| McCaw | W J | 1122 East | Alturas | Black | 2071 | 4 | June | 1948 |
| McCulley | George L | Alturas | Red | 1303 | 4 | June | 1948 | |
| McCulley | L E | Second | Alturas | Red | 1523 | 4 | June | 1948 |
| McDowell | Gale | Alturas | Black | 141 | 4 | June | 1948 | |
| McDowell | Percy | Alturas | Red | 142 | 4 | June | 1948 | |
| McGarva | Robert | East | Alturas | Red | 1343 | 4 | June | 1948 |
| McGhee | Tessie Mrs | 1947 Main | Alturas | Main | 682 | 4 | June | 1948 |
| McHugh | P J | 1135 Rine | Alturas | Red | 1192 | 4 | June | 1948 |
| McKenney | J Paul Dr | Main | Alturas | Main | 1603 | 4 | June | 1948 |
| McKenney | Philip Dr | Alturas | Main | 1602 | 4 | June | 1948 | |
| McKenney & McKenney Drs | ofc | Alturas | Main | 1601 | 4 | June | 1948 | |
| McKenzie | Chas | Alturas | Black | 1782 | 4 | June | 1948 | |
| McKinney | Violet | Alturas | Black | 1973 | 4 | June | 1948 | |
| McLaughlin | Father | 503 Fourth | Alturas | Black | 851 | 4 | June | 1948 |
| McMillan | Alex | Campbell Apts | Alturas | Black | 1193 | 5 | June | 1948 |
| McTimmonds | Dorothy Mrs | Alturas | Red | 482 | 5 | June | 1948 | |
| McVeagh | John Sr | Alturas | Red | 1692 | 5 | June | 1948 | |
| Mestre | Oscar | Alturas | Red | 1093 | 5 | June | 1948 | |
| Meyers | John | 1417 East B | Alturas | Red | 853 | 5 | June | 1948 |
| Miller | A E | Fourth | Alturas | Black | 1172 | 5 | June | 1948 |
| Miller | A M Mrs | East | Alturas | Red | 1253 | 5 | June | 1948 |
| Miller | Etta Pepperdine | Court | Alturas | Red | 342 | 5 | June | 1948 |
| Miller | Gerald | Fifth | Alturas | Black | 2693 | 5 | June | 1948 |
| Miller | Mellie | East | Alturas | Black | 1462 | 5 | June | 1948 |
| Milligan | H R | Estes | Alturas | Black | 473 | 5 | June | 1948 |
| Mills | Gordon | Alturas | Red | 2692 | 5 | June | 1948 | |
| Mitchell | C L | C | Alturas | Red | 1473 | 5 | June | 1948 |
| Model Cleaners | 1334 Main | Alturas | Black | 1061 | 5 | June | 1948 | |
| Modoc Cash Grocery | Alturas | Main | 2721 | 5 | June | 1948 | ||
| Modoc Cleaners | Modoc Hotel | Alturas | Red | 2451 | 5 | June | 1948 | |
| Modoc Co Chamber of Commerce | North | Alturas | Main | 1201 | 5 | June | 1948 | |
| Modoc Co Farm Bureau | Main | Alturas | Main | 2281 | 5 | June | 1948 | |
| Modoc Const Co | Alturas | Black | 2692 | 5 | June | 1948 | ||
| Modoc County of, Agricultural Commissioner | Alturas | Black | 2152 | 5 | June | 1948 | ||
| Modoc County of, Agricultural Extension Service | Alturas | Red | 962 | 5 | June | 1948 | ||
| Modoc County of, Assessor | Alturas | Red | 961 | 5 | June | 1948 | ||
| Modoc County of, Auditor and Recorder | Alturas | Red | 22 | 5 | June | 1948 | ||
| Modoc County of, Bureau of Identification | Alturas | Main | 2531 | 5 | June | 1948 | ||
| Modoc County of, Clerk | Alturas | Main | 1951 | 5 | June | 1948 | ||
| Modoc County of, County Health and Physician | Alturas | Main | 1601 | 5 | June | 1948 | ||
| Modoc County of, County Hospital | Alturas | Red | 143 | 5 | June | 1948 | ||
| Modoc County of, Department of Social Welfare | Alturas | Black | 2151 | 5 | June | 1948 | ||
| Modoc County of, District Attorney | Alturas | Main | 431 | 5 | June | 1948 | ||
| Modoc County of, Justice of The Peace | Alturas | Red | 2151 | 5 | June | 1948 | ||
| Modoc County of, Library | Alturas | Main | 1711 | 5 | June | 1948 | ||
| Modoc County of, "Library, School Dept Third" | Alturas | Black | 2022 | 5 | June | 1948 | ||
| Modoc County of, New County Hospital | Alturas | Main | 71 | 5 | June | 1948 | ||
| Modoc County of, Probation Officer | Alturas | Main | 2532 | 5 | June | 1948 | ||
| Modoc County of, Public Administrator | Alturas | Main | 431 | 5 | June | 1948 | ||
| Modoc County of, Sheriff | Alturas | Main | 151 | 5 | June | 1948 | ||
| Modoc County of, Superintendent of Schools | Alturas | Black | 21 | 5 | June | 1948 | ||
| Modoc County of, Superior Judge | Alturas | Main | 1681 | 5 | June | 1948 | ||
| Modoc County of, Surveyor | Alturas | Black | 961 | 5 | June | 1948 | ||
| Modoc County of, Treasurer and Tax Collector | Alturas | Black | 22 | 5 | June | 1948 | ||
| Modoc County Record | Main | Alturas | Main | 441 | 5 | June | 1948 | |
| Modoc Credit Bureau | NCO bldg | Alturas | Red | 2261 | 5 | June | 1948 | |
| Modoc Gas Co | Main | Alturas | Main | 2511 | 5 | June | 1948 | |
| Modoc Hotel | 1238 Main | Alturas | Main | 211 | 5 | June | 1948 | |
| Modoc Meat Co | Main | Alturas | Main | 2441 | 5 | June | 1948 | |
| Modoc Mobilgas Station | Redding hwy | Alturas | Red | 1562 | 5 | June | 1948 | |
| Modoc Motors | 1259 Main | Alturas | Main | 2001 | 5 | June | 1948 | |
| Modoc National Farm Loan Assn | Alturas | Main | 2041 | 5 | June | 1948 | ||
| Modoc Tractor Co | Redding hwy | Alturas | Red | 1561 | 5 | June | 1948 | |
| Modoc Trucking Co | Main | Alturas | Main | 2232 | 5 | June | 1948 | |
| Modoc Union High School | 1900 Main | Alturas | Main | 1651 | 5 | June | 1948 | |
| Moffitt | Clarence | Main | Alturas | Red | 1793 | 5 | June | 1948 |
| Moore | Charles H | Rine | Alturas | Black | 1813 | 5 | June | 1948 |
| Moore | Pete | E Seventh | Alturas | Red | 2523 | 5 | June | 1948 |
| Morayra | Jose | Alturas | Black | 1703 | 5 | June | 1948 | |
| Morely | Geo | 1020 Estes | Alturas | Black | 2383 | 5 | June | 1948 |
| Morgan | Harold | Redding hwy | Alturas | Red | 1861 | 5 | June | 1948 |
| Morgan | O D | ofc Modoc | Alturas | Main | 701 | 5 | June | 1948 |
| Morgan | O D | R West A | Alturas | Black | 641 | 5 | June | 1948 |
| Morrison | Fannie Mrs | 2109 Court | Alturas | Red | 341 | 5 | June | 1948 |
| Moty & Van Dyke | 1115 Main | Alturas | Main | 1801 | 5 | June | 1948 | |
| Mountain Lily Dairy Inc | 1321 Carlos | Alturas | Main | 1821 | 5 | June | 1948 | |
| Moyer | A F | McVeagh Apt | Alturas | Red | 1693 | 5 | June | 1948 |
| Moyer | Ernest | Alturas | Black | 2552 | 5 | June | 1948 | |
| Moyer | Roger | Fourth | Alturas | Red | 1401 | 5 | June | 1948 |
| Moyer Gravel Co | Lakeview hwy | Alturas | Red | 2271 | 5 | June | 1948 | |
| Musselman | Ross R | Alturas | Red | 321 | 5 | June | 1948 | |
| Myers | John, | 1417 East B | Alturas | Red | 853 | 5 | June | 1948 |
| Nasland | Robert | East | Alturas | Red | 2592 | 5 | June | 1948 |
| National Auto Club Service | 1259 Main | Alturas | Main | 2001 | 5 | June | 1948 | |
| National Farm Loan Assn | 815 Main | Alturas | Main | 2041 | 5 | June | 1948 | |
| NCO Building | ofc | Alturas | Red | 2262 | 5 | June | 1948 | |
| Neer | John | County rd | Alturas | Black | 1292 | 5 | June | 1948 |
| Nehlsen | Ernest J | 1718 East B | Alturas | Red | 872 | 5 | June | 1948 |
| Neilson | Carlo | Redding hwy | Alturas | Red | 492 | 5 | June | 1948 |
| Nelson | Katie Mrs | 1721 East B | Alturas | Red | 873 | 5 | June | 1948 |
| Nelson | Lonnie L | Fourth | Alturas | Black | 1173 | 5 | June | 1948 |
| Nelson | Reid R | No 3 Vets Housing | Alturas | Black | 2482 | 5 | June | 1948 |
| Nelson | Winnie Mrs | 1347 Howard | Alturas | Red | 371 | 5 | June | 1948 |
| Nichols | Luther | East | Alturas | Black | 1281 | 5 | June | 1948 |
| Niles Coffee Shop | Alturas | Main | 1571 | 5 | June | 1948 | ||
| Niles Hotel | 928 Main | Alturas | Main | 1581 | 5 | June | 1948 | |
| Niles Hotel | 928 Main | Alturas | Main | 1591 | 5 | June | 1948 | |
| Niles Lounge | 924 Main | Alturas | Main | 261 | 5 | June | 1948 | |
| Niles Theatre | 928 Main | Alturas | Main | 781 | 5 | June | 1948 | |
| Nixon | Harry | McDowell | Alturas | Red | 2772 | 5 | June | 1948 |
| Norton | D L | Maple | Alturas | Black | 1381 | 5 | June | 1948 |
| Noviack | J | Fourth | Alturas | Main | 1162 | 5 | June | 1948 |
| Oliver | Ned | Alturas | Red | 1091 | 5 | June | 1948 | |
| Ong | R O | 2001 Main | Alturas | Red | 33 | 5 | June | 1948 |
| Orr | Wayne | Estes | Alturas | Red | 622 | 5 | June | 1948 |
| Oxley | Ada | Estes | Alturas | Black | 472 | 5 | June | 1948 |
| Pacific Tel & Tel Co | Alturas | Main | 2031 | 5 | June | 1948 | ||
| Panter | Frank | Ranch Pine Creek | Alturas | 11-F-11 | 5 | June | 1948 | |
| Partridge | Dewey | Riverside | Alturas | Red | 1291 | 5 | June | 1948 |
| Partridge | Hugh | East | Alturas | Black | 2591 | 5 | June | 1948 |
| Pattiani | A W | 1028 Third | Alturas | Black | 371 | 5 | June | 1948 |
| Paullin | Pat | Alturas | Red | 31 | 5 | June | 1948 | |
| Payne | Ranch | Parker Creek Line | Alturas | 6-F-2 | 5 | June | 1948 | |
| Pearce | G E | 524 Modoc | Alturas | Black | 952 | 5 | June | 1948 |
| Pedersen | A B | 2048 Court | Alturas | Black | 1541 | 5 | June | 1948 |
| Pengelly | Della Mrs | 1537 East D | Alturas | Black | 982 | 5 | June | 1948 |
| Pepperdine | Carol | 2120 East | Alturas | Red | 2591 | 5 | June | 1948 |
| Pepperdine | Milo T | Park | Alturas | Black | 1322 | 5 | June | 1948 |
| Peppers | Harley | Alturas | Red | 2212 | 5 | June | 1948 | |
| Perry | Bill | Alturas | Black | 1702 | 5 | June | 1948 | |
| Phelan | M F | 1736 East C | Alturas | Red | 1471 | 5 | June | 1948 |
| Phillips | Joseph | Fourth | Alturas | Red | 1722 | 5 | June | 1948 |
| Phillips | Neal | Alturas | Red | 2542 | 5 | June | 1948 | |
| Pinneo | Harry | Estes Add | Alturas | Main | 42 | 5 | June | 1948 |
| Pit Lounge | 916 Main | Alturas | Main | 2331 | 5 | June | 1948 | |
| Pollard | K L | Alturas | Main | 2032 | 5 | June | 1948 | |
| Polly Ann Bakery | 1025 Main | Alturas | Main | 681 | 5 | June | 1948 | |
| Porter | Carlton | Estes | Alturas | Red | 2381 | 5 | June | 1948 |
| Porter | Floyd | Ranch Parker Creek Line | Alturas | 6-F-12 | 5 | June | 1948 | |
| Porter | Jim | Ranch Parker Creek Line | Alturas | 6-F-20 | 5 | June | 1948 | |
| Porter | Leland | Ranch Parker Creek Line | Alturas | 6-F-4 | 5 | June | 1948 | |
| Porter | Willard | Carlos | Alturas | Red | 1701 | 5 | June | 1948 |
| Post Office Café | Modoc | Alturas | Black | 2061 | 5 | June | 1948 | |
| Powers | Alvin | E Fourth | Alturas | Red | 984 | 5 | June | 1948 |
| Pratt | Chas | Bemmerly & Cooper Ranch | Alturas | 5-F-11 | 1 | June | 1948 | |
| Price | George | Modoc | Alturas | Red | 621 | 5 | June | 1948 |
| Price | Joe | Alturas | Red | 2383 | 5 | June | 1948 | |
| Public Utilities California Corporation | Business Office | 1120 Main | Alturas | Main | 2941 | 5 | June | 1948 |
| Public Utilities Telegraph | To send a telegram ask for, Alturas, Telegraph | 5 | June | 1948 | ||||
| Pugh | Robert | Park | Alturas | Black | 1353 | 5 | June | 1948 |
| Purcell | Jack E | 2031 Court | Alturas | Red | 974 | 5 | June | 1948 |
| Purvis | James | 740 Modoc | Alturas | Red | 2483 | 5 | June | 1948 |
| Quinn | W J Dr | ofc Bank of America bldg | Alturas | Main | 401 | 5 | June | 1948 |
| Quinn | W J Dr | Fourth | Alturas | Main | 402 | 5 | June | 1948 |
| Rachford | A A | taxidermist East D | Alturas | Black | 2204 | 6 | June | 1948 |
| Rachford | Donald | Alturas | Black | 2201 | 6 | June | 1948 | |
| Radtke | Ernay F | 732 Seventh | Alturas | Red | 1941 | 6 | June | 1948 |
| Rail The | Main | Alturas | Red | 2711 | 6 | June | 1948 | |
| Railway Express Agency | 1109 Main | Alturas | Main | 1311 | 6 | June | 1948 | |
| Raker | Bessie Mrs | 1224 Howard | Alturas | Red | 322 | 6 | June | 1948 |
| Raker | C A | atty Belli bldg | Alturas | Black | 1011 | 6 | June | 1948 |
| Ramsey | James | Alturas | Black | 2424 | 6 | June | 1948 | |
| Rea | W L | Park | Alturas | Black | 2562 | 6 | June | 1948 |
| Ready-Mix Concrete Co | 701 Third | Alturas | Main | 41 | 6 | June | 1948 | |
| Rector | Chas M | S Main | Alturas | Black | 1792 | 6 | June | 1948 |
| Red & White Store | Canby | Alturas | Call Long Distance | 6 | June | 1948 | ||
| Reid | Douglas | Fifth & East | Alturas | Black | 2691 | 6 | June | 1948 |
| Reid | J L | Alturas | Red | 1172 | 6 | June | 1948 | |
| Remington | H W | Henderson | Alturas | Black | 733 | 6 | June | 1948 |
| Renfroe | R R | Sixth | Alturas | Red | 241 | 6 | June | 1948 |
| Renner | Milan | Third | Alturas | Red | 811 | 6 | June | 1948 |
| Richfield Oil Corp | Alturas | Main | 1151 | 6 | June | 1948 | ||
| Ritchey | R J | 2030 Main | Alturas | Black | 971 | 6 | June | 1948 |
| Riverside Service Station | 848 Main | Alturas | Main | 111 | 6 | June | 1948 | |
| Roach | W H | W Second | Alturas | Black | 2743 | 6 | June | 1948 |
| Robinson | Jack D | 1532 Third | Alturas | Black | 2553 | 6 | June | 1948 |
| Robison | Bertha Mrs | Tenth | Alturas | Red | 32 | 6 | June | 1948 |
| Robison | Paul | East | Alturas | Red | 651 | 6 | June | 1948 |
| Roby | F L | 618 Modoc | Alturas | Red | 633 | 6 | June | 1948 |
| Rodman | W T | Ranch Pine Creek | Alturas | 11-F-2 | 6 | June | 1948 | |
| Ross | F A Dr | dentist Belli bldg | Alturas | Main | 771 | 6 | June | 1948 |
| Rowland | Nels | 1503 B | Alturas | Black | 481 | 6 | June | 1948 |
| Royall | George B | Apt 14 Vets Housing | Alturas | Red | 2432 | 6 | June | 1948 |
| Royce | Joe | East | Alturas | Red, 2593 | 6 | June | 1948 | |
| Rush | W G | First | Alturas | Red | 122 | 6 | June | 1948 |
| Russell | Bill | 1741 East B | Alturas | Black | 871 | 6 | June | 1948 |
| Saunders | Claude | Fourth | Alturas | Black | 1091 | 6 | June | 1948 |
| Saunders | R E Jr | Rine | Alturas | Red | 1112 | 6 | June | 1948 |
| Scammon | Victor | Third | Alturas | Black | 813 | 6 | June | 1948 |
| Schaefer | Mary | Spanish Court | Alturas | Red | 2763 | 6 | June | 1948 |
| Schneegas | E W Mrs | Fourth | Alturas | Red | 1723 | 6 | June | 1948 |
| Schorch | R H | Third | Alturas | Black | 1323 | 6 | June | 1948 |
| Scott | Hazzie Mrs | 918 Estes | Alturas | Black | 1213 | 6 | June | 1948 |
| Scout Hall | East | Alturas | Main | 1612 | 6 | June | 1948 | |
| Seitz | W B | Berry Add | Alturas | Black | 1441 | 6 | June | 1948 |
| Server | Ernest R | Second | Alturas | Black | 1522 | 6 | June | 1948 |
| Sharp | J C | 1220 East | Alturas | Main | 1001 | 6 | June | 1948 |
| Shell Oil Co Inc | plant | Redding hwy | Alturas | Main | 761 | 6 | June | 1948 |
| Shell Oil Co Inc- Reimer | Paul O | 1811 Fourth | Alturas | Main | 762 | 6 | June | 1948 |
| Shellgrain | John | 1224 Henderson | Alturas | Red | 513 | 6 | June | 1948 |
| Sherman | R B | 2110 Court | Alturas | Black | 1542 | 6 | June | 1948 |
| Shofner | B N | Redding hwy | Alturas | Black | 1861 | 6 | June | 1948 |
| Sigler | Lynn | Alturas | Black | 1863 | 6 | June | 1948 | |
| Simms | Martin | Court | Alturas | Red | 1273 | 6 | June | 1948 |
| Simonsen | Ole | Alturas | Black | 1622 | 6 | June | 1948 | |
| Simpson | John E | East | Alturas | Black | 183 | 6 | June | 1948 |
| Sisco | J D | Alturas | Black | 1443 | 6 | June | 1948 | |
| Sisco | James, | East Fourth | Alturas | Black | 571 | 6 | June | 1948 |
| Sisson | Lulu Mrs | 610 Modoc | Alturas | Red | 953 | 6 | June | 1948 |
| Sistok | Peter | nr Airport | Alturas | Black | 2421 | 6 | June | 1948 |
| Slinkard | S D | Fourth | Alturas | Black | 1223 | 6 | June | 1948 |
| Slippy | Ed | 732 Fourth | Alturas | Black | 781 | 6 | June | 1948 |