I don't know about that Buckeye Clipper livery, but here are some Repop ads from the company
https://www.americanikons.com/produc...on-ditcher-co/
"Buckeye Traction Ditcher Company"
Swoops on both sides. . 1937 ad
In the full resolution pic (copy url, remove h before jpg), check out the lower inset picture it top right. I think it looks like the upper shape probably stops on the cab curve, lower shape looks like it may run horizontal across back?
1945 ad
This model 50 had the house door open, but gives better hints about paint going around the corner
https://www.nesys.org/HCEA/AdPix/Buckeye_m.JPG
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Pinstripes only. Model 70
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Bowling Green State University Library apparently has some good stuff in their archives
https://lib.bgsu.edu/finding_aids/items/show/134
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USA millitary tech manuals for Buckeye 70s
TM 5-1197, TM 5-1198