1938 To 1947 Tube Radios Dial Cord Stringing Guide Sam's Photofact DC-1 1st ed

c.1948 Dial Cord Stringing Guide by Howard W Sams DC-1 Radio Repair

Dial Cord Stringing Guide, Sam's Photofacts

Dial Cord Stringing Guide, DC-7 Sam's Photofacts 1959

Vintage 1954 Howard Sam’s Dial Cord Stringing Guide Booklet DC-3 Photofact SC

1947 Dial Cord Stringing Guide by Howard W Sams DC-1 Radio Repair 1st Ed 1stP

TV/Radio Tube Substitution Handbook by Howard Sams 1971

Howard W Sams Auto Radio Series and Transistor Radio Series