Seeking Northrop Gamma info

Hi, everybody - I'm looking for info on the Northrop Gamma
2-series, specifically:

Does anyone know what happened to the remains of the Sky Chief
(X-12265) after it was destroyed in an accident during the 1936 Bendix
Trophy Race from New York to Los Angeles? I understand there was an
explosion over Kansas that forced a bailout.

Does anyone know the ultimate fate of the wreckage of Jackie Cochran's
NR-13761, or the whereabouts of Bernard McFadden's NC-2111? NC-2111
finished in third place in the 1935 Bendix Trophy Race. Anything about
NR-13757 or NR-13758, two of the Gamma's built for TWA?

I did find on the Northrop registration website the following list:

2111 Gamma 2D2 (2H), 12 - Army Engrs 1942; path unknown
12265 Gamma 2A, 1 - Frank Hawks Texaco Sky-Chief; crashed 9/4/36
12269 Gamma 2B, 2 - Ellsworth Polar Star; Smithsonian 1936
12291 Gamma 2C, 5 - YA-13/XA-16 [34-027]; surveyed
13755 Gamma 1E, 29 - [SE-ADW]; crashed 7/6/34
13757 Gamma 2D, 8 - Army Engrs 1942, rptd crashed in Africa
13758 Gamma 2D, 9 - UC-100 [42-94140]; surveyed 9/11/43
13759 Gamma 2D, 10 - [XA-ABJ] Spanish Civil War
13760 Gamma 2E, 47 - Frank Hawks USSR 1935
13761 Gamma 2G, 11 - H Hughes 1936 speed record; crashed 7/10/36

I'm interested in all of the 2A, 2B, 2D, 2G, and 2H versions. Any
info on these aircraft, last known location, and/or their fate is
welcomed.

A shot in the dark, I know, but I thought I might find others out there
who are as interested in this great plane as I am.

Thanks!

Diilon