| Last Name | First Name | Address | City | Misc | Telephone | Page # | Month | Year |
| Kauffman | Frank | 1344 First | Alturas | Red | 641 | 4 | June | 1948 |
| Kelley | Arthur | Carlos | Alturas | Black | 1701 | 4 | June | 1948 |
| Kelley | Dexter | Berry Add | Alturas | Black | 1983 | 4 | June | 1948 |
| Kelley Union Service Station | Alturas | Red | 1062 | 4 | June | 1948 | ||
| Kelly | Sarah Mrs | 1333 East | Alturas | Black | 1742 | 4 | June | 1948 |
| Kenyon | Al | Seventh & East D | Alturas | Black | 2521 | 4 | June | 1948 |
| Kerr | Donald | 1324 Second | Alturas | Red | 921 | 4 | June | 1948 |
| Kerr's Mortuary | 1300 Second | Alturas | Red | 922 | 4 | June | 1948 | |
| Kimball | Josie | Alturas | Red | 1942 | 4 | June | 1948 | |
| Kipp | Ralph H | Alturas | Red | 2742 | 4 | June | 1948 | |
| Knemeyer | Edward F | 1705 Seventh | Alturas | Black | 873 | 4 | June | 1948 |
| Knight | W B | 1714 Third | Alturas | Red | 1772 | 4 | June | 1948 |
| Koch | Sallie Mrs | 538 Fourth | Alturas | Red | 852 | 4 | June | 1948 |
| Kohls | Arnold | 1140 West C | Alturas | Red | 1353 | 4 | June | 1948 |
| Kormier | George | 1515 Third | Alturas | Black | 1753 | 4 | June | 1948 |
| Kunselman | David | First | Alturas | Red | 521 | 4 | June | 1948 |
| Laird | Ralph | R West A | Alturas | Red | 312 | 4 | June | 1948 |
| Laird | Reuel A | ofc Laird bldg | Alturas | Red | 251 | 4 | June | 1948 |
| Laird | Reuel A | 1149 North | Alturas | Red | 691 | 4 | June | 1948 |
| Laird | Richard | S Main | Alturas | Red | 933 | 4 | June | 1948 |
| Laird's Pharmacy | 1021 Main | Alturas | Main | 171 | 4 | June | 1948 | |
| Larimore | Harry | Eighth | Alturas | Red | 1251 | 4 | June | 1948 |
| Larmay | June Mrs. | East | Alturas | Black | 901 | 4 | June | 1948 |
| Laundromat | First | Alturas | Red | 821 | 4 | June | 1948 | |
| Laurence | Rutherfurd | Tenth | Alturas | Black | 2293 | 4 | June | 1948 |
| Laver | Anna C Mrs | 1437 Fourth | Alturas | Black | 1902 | 4 | June | 1948 |
| Lay | Robert L | Berry Add | Alturas | Black | 1503 | 4 | June | 1948 |
| Layton | Joe M | Maple | Alturas | Red | 1381 | 4 | June | 1948 |
| Lederer | Charles | ofc Court House | Alturas | Main | 431 | 4 | June | 1948 |
| Lederer | Charles | Riverside | Alturas | Red | 901 | 4 | June | 1948 |
| Leonard | Loyd | Alturas | Black | 1451 | 4 | June | 1948 | |
| Leonard | Oral | Henderson | Alturas | Black | 2771 | 4 | June | 1948 |
| Leo's Smoke Shop | restrnts 1060 Main | Alturas | Black | 302 | 4 | June | 1948 | |
| Lesmeister | Paul | East | Alturas | Red | 561 | 4 | June | 1948 |
| Lewis | Budd | 2319 Main | Alturas | Red | 1383 | 4 | June | 1948 |
| Lindgren | Alvin | Alturas | Red | 481 | 4 | June | 1948 | |
| Lorenz Company (J C Strong) | Estes Add | Alturas | Black | 1332 | 4 | June | 1948 | |
| Love | Olerick | Alturas | Black | 1452 | 4 | June | 1948 | |
| Lovenss Logging Co | Canby | Alturas | Call Long Distance | 4 | June | 1948 | ||
| Lush | T W | Alturas | Black | 2581 | 4 | June | 1948 | |
| Lybarger | James | Alturas | Red | 1521 | 4 | June | 1948 |