Columbia (England) 5 disk set
Documentation (thanks to Norman Field) |
Marconi Official Training Signals 6 disks 1923
|
Winner set of 4 disks, 1925
|
Smith 5 disk set
|
Smith 5 disk set
|
.Insuline Corporation of America 5 disk set
|
Linguaphone Institute 5 disk set
(No documentation) |
Linguaphone Institute 6 disk set
Documentation available on request |
Allied Radio 5 disk set
|
.Photosound Course 12 disk set (1950)
|
Photosound Course 78 RPM Volume 3 (1955)
|
Bureau of Naval Personnel Radio Code Instructional Recordings
|
RCA Victor Records 6 disk set
|
.American Radio Institute
|
Boy Scouts of America set
of 2 LP View Documentation |
1952 78 RPM 11 disk Senior Code Course set
|
1952 78 RPM 5 disk Junior Code Course set
|
.1952 78 RPM 5 disk Junior Code Course set
|
Army Institute (Allied)
|
.Basic Radio Code Kit
|
. |
