Note
QST, Oct 1945, p. 121.
QST, Nov 1945, p. 69. (A few notes)
QST, Nov 1945, p. 117.
NC-2-40D QST, Jul 1946, inside back cover. "D" version has amateur band spread)
QST, Oct 1946, p. 135. (NC-2-40-D)
QST, Nov 1946, inside back cover. (NC-2-40-D)
Concord catalog 9-47, p. 160.
Allied catalog 1948 p. 156. (NC-2-40D info)
Lafayette catalog number 89, p 175.
QST, Jul 1950, p. 103. (these might be NOS)
Often seen as "NC-240"