Challenger Tom:
0 June 1935 US 6 and US 6A
Challenger Tom:
A 1936 US 6
Challenger Tom:
B 1936 US 6
Challenger Tom:
C 1937 2-1-1937 US 6
Challenger Tom:
D 1937 2-1-1937 US 6
Challenger Tom:
F 1937 US 6 detailed
Challenger Tom:
E 1937 Dec 1936 Sketch US 6
Challenger Tom:
G 1937 2-8-1937 US 6 approved
Challenger Tom:
H 1937 2-8-1937 US 6 approved
Challenger Tom:
I 1937 2-8-1937 US 6 approved
Challenger Tom:
J 9-17-1937 Merced US 6 Tioga Inqury
Challenger Tom:
JA 10-2-1937 Merced case for US 6 Tioga 2
Challenger Tom:
JA 10-2-1937 Merced case for US 6 Tioga
Challenger Tom:
JJ 10-4-1937 Iowa Replies to Merced
Challenger Tom:
K 10-8-1937 Merced Reply
Challenger Tom:
L 10-12-1937 Merced case for US 6A via Tioga
Challenger Tom:
M 10-18-1937 US 6A denial