Handwritten on original document:
Information herein compiled by Joel Cohn, switchman from Mutual + 4A offices in 1976 for a class in urban planning at U of W.
The original document is actually six documents:
- 1923 – 1938:
Seattle, September 24, 1954
- 1940 – 1946:
Seattle, September 27, 1954
- 1947 – 1948:
Seattle, September 28, 1954
- 1949 – 1950:
Seattle, October 6, 1954
- 1951 – 1953:
Seattle, November 1, 1954
- 1954:
File: 647.2.1
,Seattle, January 1, 1955
| CO | Unit | From | To | Started |
|---|---|---|---|---|
| Seattle Melrose | Melrose | CB | Panel | 1923-03 |
| Seattle Rainier | Rainier | CB | Panel | 1923-03 |
| Seattle West | West | CB | Panel | 1923-03 |
| Seattle Garfield | Garfield | CB | Panel | 1923-09 |
| Seattle Main | Main | CB | Panel | 1924-02 |
| Seattle Main | Elliott | CB | Panel | 1924-02 |
| Seattle Riverside | Main | CB #1 | #1 Step | 1927-02 |
| Seattle East | East | CB #1 | Panel | 1927-09 |
| Seattle East | Prospect | CB #1 | Panel | 1927-09 |
| Seattle Main | Seneca | (new) | Panel | 1929-03 |
| Yakima | - | CB #8 | #1 Step | 1930-11 |
| Seattle Garfield | Alder | (new) | Panel | 1930-12 |
| Spokane Riverside | Riverside | CB #1 | #1 Step | 1931-07 |
| Seattle Melrose | Evergreen | (new) | Panel | 1931-08 |
| Seattle East | Capitol | CB #1 | Panel | 1932-08 |
| Tacoma Market | Main | CB #1 | #1 Step | 1933-04 |
| Tacoma Market | Broadway | CB #1 | #1 Step | 1933-04 |
| Othello | - | (new) | 32A32 | 12-1937 |
| Tacoma Yukon | Crestview | Magneto 105A | 350A | 1938-06 |
| Tacoma Lakewood | Lakewood | (new) | 350A | 1938-07 |
| Coulee City | - | Magneto 105A | 32A32 | 1938-10 |
| Olympia | - | CB #8 | #1 Step | 1938-12 |
| Spokane Keystone | Lakeview | CB #1 | #1 Step | 1940-03 |
| Spokane Walnut | Walnut | CB #9 | #1 Step | 1940-03 |
| Belfair | - | (new) | 32A32 | 1940-05 |
| Liberty Lake | - | (new) | 32A32 | 1940-05 |
| Silverdale | - | CB-Dean | 355A | 1940-05 |
| Tacoma Waverly | Atlas | (new) | 350A | 1940-05 |
| Port Madison | - | Magneto 105A | 355A | 1940-06 |
| Port Orchard | - | CB-Dean | 355A | 1940-06 |
| Tacoma Granite | Granite | (new) | 350A | 1940-06 |
| Tacoma Proctor | Proctor | CB #1 | #1 Step | 1940-06 |
| Buckley | - | Magneto 105A | 355A | 1940-07 |
| Culdesac | - | (new) | 32A32 | 1940-07 |
| Des Moines | - | Magneto 105A | 355A | 1940-07 |
| Wilkeson | - | Magneto 1800 | 36A1 | 1940-07 |
| Waitsburg | - | Magneto 105A | 355A | 1940-12 |
| Spokane Glenwood | Glenwood | CB #1 | #1 Step | 1941-03 |
| Graham | - | (new) | 32A32 | 1941-05 |
| Tacoma Hawthorne | Garland | CB #1 | #1 Step | 1941-06 |
| Sprague | - | CB "C" | 355A | 1941-07 |
| Seattle West | Avalon | (new) | #1XB | 1941-09 |
| Seattle Rainier | Lander | (new) | #1XB | 1941-10 |
| Seattle Kenwood | Kenwood | CB #1 | #1XB | 1942-02 |
| Seattle Kenwood | Vermont | CB #1 | #1XB | 1942-02 |
| Renton | - | CB #9 | 350A | 1942-05 |
| Ravensdale | - | Magneto #1012A | 386A | 1944-11 |
| Black Diamond | - | Magneto 1800 | 32A32 | 1942-12 |
| Tacoma hawthorne | Hillside | (new) | #1 Step | 1944-12 |
| Seattle Sunset | Dexter | (new) | #1XB | 1945-04-29 |
| Lake Crescent | - | Magneto S.C. | 386B | 1946-03-15 |
| Spokane Empire | Fairfax | (new) | SxS | 1946-03-30 |
| Seattle Kenwood | Filmore | (new) | #1XB | 1946-10-19 |
| Eureka | - | Magneto J.B. | CX10 | 1946-11-18 |
| Ocosta | - | (new) | CX60 | 1946-12-14 |
| Hatton | - | Magneto 1012A | CX30 | 1946-12-18 |
| Loon Lake | - | Magneto 1800 | CX30 | 1947-01-30 |
| Seattle East | Minor | (new) | #1XB | 1947-01-25 |
| Coulee City | - | 32A32 | 355A | 1947-03-31 |
| Castle Rock | - | CB-Dean | 355A | 1947-05-24 |
| Napavine | - | Magneto 105A | CX60 | 1947-06-25 |
| Frances | - | Magneto H-1182 | CX30 | 1947-09-24 |
| Lebam | - | Magneto H-1182 | CX60 | 1947-09-24 |
| Spokane Glenwood | Hudson | (new) | #1 Step | 1947-10-04 |
| Centralia | - | CB #10 | #1 Step | 1947-10-11 |
| Seattle Kenwood | Sheridan | CB #1 | #1XB | 1947-11-02 |
| Seattle Sunset | Sunset | CB #1 | #1XB | 1947-11-02 |
| Seattle Sunset | Hemlock | CB #1 | #1XB | 1947-11-02 |
| Lummi Island | - | (new) | CX30 | 1947-12-03 |
| Tacoma Proctor | Skyline | (new) | #1 Step | 1947-12-20 |
| Lakeside | - | CB #9 | #1 Step | 1948-01-10 |
| South Bend | - | CB-Kellogg | 355A | 1948-01-17 |
| Belfair | - | 32A32 | 355A | 1948-02-25 |
| Tyler | - | Magneto 1012A | CX30 | 1948-02-25 |
| Seattle Main | XB Tandem | (new) | XBT | 1948-04-12 |
| Seattle West | Holly | (new) | #1XB | 1948-04-17 |
| Port Gamble | - | (new) | CX100 | 1948-05-06 |
| Easton | - | (new) | CX100 | 1948-06-04 |
| Newman Lake | - | (new) | 355A | 1948-06-23 |
| Elbe | - | (new) | 355A | 1948-06-30 |
| Wilkeson | - | 36-A-1 | CX100 | 1948-07-07 |
| Port Ludlow | - | (new) | CX100 | 1948-07-08 |
| Du Pont | - | (new) | CX100 | 1948-07-08 |
| Starbuck | - | Magneto "D" | CX30 | 1948-08-06 |
| Seattle Rainier | Mohawk | (new) | #1XB | 1948-08-26 |
| Edwall | - | Magneto 105A | CX100 | 1948-08-31 |
| South Prairie | - | Magneto 1012A | CX60 | 1948-09-16 |
| Wilbur | - | Magneto "C" | 355A | 1948-09-30 |
| Nespelem | - | 551-B | 355A | 1948-10-07 |
| Port Angeles | - | CB-Dean | #1 Step | 1948-10-16 |
| Lake Quinault | - | Magneto 1800 | CX100 | 1948-10-21 |
| Battleground | - | Magneto 105A | 355A | 1948-11-23 |
| Puyallup | - | CB-Kellogg | #1 Step | 1948-12-04 |
| Seattle Logan | Logan | CB #11 | #1XB | 1948-12-13 |
| Seattle Logan | Cherry | CB #11 | #1XB | 1948-12-13 |
| Seattle Emerson | Emerson | (new) | #1XB | 1948-12-16 |
| Benge | - | 550-C | CX30 | 1948-12-21 |
| Warden | - | (new) | 355A | 1948-12-30 |
| Pacific Beach | - | Magneto 105A | CX100 | 1949-02-10 |
| Moclips | - | Magneto 1800 | CX100 | 1949-03-01 |
| Pateros | - | Magneto 105A | 355A | 1949-03-09 |
| Maple Valley | - | (new) | 355A | 1949-03-17 |
| Ravensdale | - | 386A | CX60 | 1949-04-07 |
| Pasco | - | CB #12 | #1 Step | 1949-04-30 |
| Lake Crescent | - | 386B | CX200A | 1949-07-21 |
| Seattle Main | Mutual | (new) | #1XB | 1949-08-13 |
| Hartline | - | Magneto 1800 | CX200A | 1949-11-17 |
| Bremerton | - | CB #11 | #1 Step | 1949-11-20 |
| Issaquah | - | 605A PBX | 355A | 1949-12-07 |
| Lummi Island | - | CX30 | CX200A | 1949-12-20 |
| Odessa | - | Magneto 105A | 355A | 1949-12-20 |
| Marcus | - | (new) | CX200A | 1949-12-21 |
| Spokane Empire | Empire | (new) | #1 Step | 1950-01-16 |
| Chehalis | - | CB #10 | #1 Step | 1950-01-28 |
| Sunnyslope | - | (new) | 355A | 1950-02-21 |
| Eureka | - | CX10 | CX30 | 1950-04-05 |
| Green Bluff | - | PBX | CX200A | 1950-06-16 |
| Vancouver | - | CB #11 | #1 Step | 1950-06-17 |
| Spokane Main | Temple | (new) | #1 Step | 1950-09-12 |
| Seattle Emerson | Gladstone | (new) | #1XB | 1950-09-28 |
| Wallula | - | (new) | 551B | 1950-09-27 |
| Sumner | - | CB #12 | #1 Step | 1951-03-03 |
| Moses Lake | Air Base | (new) | 355A | 1951-04-11 |
| Tacoma Market | Fulton | (new) | #1 Step | 1951-07-24 |
| Ashford | - | (new) | 356A | 1951-08-06 |
| Othello | - | 32A32 | 355A | 1951-08-07 |
| Shelton | - | CB #9 | #1 Step | 1951-08-11 |
| Loon Lake | - | CX30 | 32A32 | 1951-08-30 |
| Elk | - | (new) | 356A | 1951-09-10 |
| Copalis | - | (new) | 356A | 1951-09-27 |
| Deer Park | - | Magneto 105A | 355A | 1951-09-27 |
| Spokane Trojan | Trojan | (new) | #1 Step | 1951-10-31 |
| Graham | - | 32A32 | 355A | 1952-05-22 |
| Ephrata | - | CB #12 | #1 Step | 1952-07-12 |
| Lewiston | - | CB #11 | #1 Step | 1952-11-01 |
| Wallula | - | 551B | (discontinued) | 1952-11-01 |
| Green Bluff | - | CX200A | 355A | 1952-11-15 |
| Liberty Lake | - | 32A32 | 355A | 1942-11-15 |
| Orchards | - | 551D | 355A | 1953-01-29 |
| Wilson Creek | - | Magneto 1800 | CX200A | 1953-06-11 |
| Springdale | - | Magneto 105A | 32A32 | 1953-06-12 |
| Almira | - | Magneto 105A | 356A | 1953-06-18 |
| Ridgefield | Kellogg | - | 355A | 1953-07-14 |
| Eureka | - | CX30 | CX60 | 1953-07-16 |
| Winlock | - | CB605 | 355A | 1953-10-01 |
| Black Diamond | - | 32A32 | 355A | 1954-01-28 |
| Seattle Kenwood | Juniper | (theoretical) | (discontinued, no equipment change) | 1954-03 |
| Roy | - | Magneto 105A | 32A32 | 1954-06-03 |
| Hoodsport | - | Magneto 105A | 355A | 1954-06-04 |
| Des Moines | Trinity | 355A | #1 Step | 1954-07-25 |
| Oroville | Grover 6 | Magneto 105A | 355A | 1954-07-29 |
| Seattle East | XB Tandem | (new) | XBT | 1954-09-05 |
| Craigmont | Waverly 4 | Magneto 105A (A) | 355A | 1954-09-12 |
| Lind | Orchard 7 | Magneto 1005-1006 | 355A | 1954-09-29 |
| Port Blakely | Viking | CB #12 | #1 Step | 1954-10-03 |
| South Prairie | - | CX60 | (B) | 1954-11-13 |
| Pe Ell | University 8 | Magneto 1240D | - | 1954-12-09 |
| Oakville | Browning 3 | CX30 | (Combined with Rochester) | 1954-12-12 |
| Rochester | Browning 3 | Magneto 105B | 355A | 1954-12-12 |
| Farmington | - | Magneto 1800 | (Sold to General Telephone) | 1954-12-16 |
| Palouse | - | "C" Frame MCB | (Sold to General Telephone) | 1954-12-16 |
| Winchester | Waverly 4 | Magneto 1800 | (Combined with Craigmont) | 1954-12-29 |
| Stites | Webster 6 | Magneto 1800 | (Combined with Kooskia) | 1954-12-29 |
| Kooskia | Webster 6 | Magneto 105A | 355A | 1954-12-29 |
Note A: This board converted to a toll switchboard and left in place.
Note B: Exchange sold 1954-11-13.