QST, Sep 1937, back cover.
Lafayette catalog number 69, p. 102.
Lafayette catalog number 73, p. 107.
Lafayette catalog number 78, p. 147.
References
National's notes: QST, Sep 1937, p. 69.
Brief description. Radio News, Nov 1937, p. 279
A few notes: QST, Dec 1937, page 61.
Radio Craft, Jan 1938, p. 403
National's notes: QST, Sep 1938, p. 63.
Radio News, May 1941, p. 51. (clearance)
NC-80
