Here is a hard to find Item. A Reproduction of Original Philco Factory Data on CD... 1933 Philco Radio Wiring Diagrams and Parts Lists (models 3, 4, 4C, 5, 6, 8, 12, 9, 10, 14, 15, 16, 17, 18, 19, 20, 20A, 21, 22C, 30, 35, 36, 37, 38, 38A, 41, 43, 44, 46, 47, 48, 50, 50A, 51, 51A, 52, 53, 54, 57, 60, 65, 70, 70A, 71, 76, 77, 80, 81, 84, 86, 87, 89, 90, 90A, 91, 95, 96, 111, 111A, 112, 112A, 470, 470A, 490, and 511), Full Schematic and Layout and Parts List for all Radios

...  Philco Radio , Tube Type . CD comes with Adobe Reader....