@SPSF posted:So many "Firsts" brought to the O gauge market courtesy of MTH.
F7 [Williams/Kusan was really the first F7]
GP7 (cannot count Lionel due to stamped handrails) Sorry but it was a GP9 that MTH came out with and labeled as a GP7. Atlas O has the first SCALE GP7 with correct PIPE HAndrails.
GP9 (cannot count Lionel due to stamped handrails)
GP20 (cannot count Lionel due to stamped handrails)
GP30
GP40
GP60M [Atlas O was the first MTh Followed!]
SD9 (cannot count Lionel due to adding 6 axle trucks to a GP9) [Sorry, MTH is really an SD7 - look at the marker light positions]
SW1500
SD45 (Williams was non proportional)
FP45 (Williams was non proportional)
SD45T-2
C30-7
SD50
SD60
SD60M
SD70M
SD90Mac
Dash8
Dash9
AC4400CW [Sorry but 3rd Rail Brass had the AC400CW come out first]
AC6000
U50C
U50D
DDA40X
89' Autocarriers [you mean Shortened 18" Versions - O scale brass for Overland was the first Scale autoracks, Lionel for 3 rail scale O gauge]
And many more