I looked at the Piqua Call newspaper archives yesterday and found advertisements for the Crumback-Rogers dealership although all the ads were for used cars. I looked at 68, 69, & 70 newspapers. It appears that Crumback was involved in many dealerships in the area.
On a different note, I did like the price of cars quoted in the ads!! Where is my time machine?
The numbers were very different than today, but new cars were still expensive even in 1969..
I was in the USAF, about to make sergeant and making ~$150/month (of course with free food, board, med, etc).
I ordered a new 1970 Plymouth Roadrunner in October 1969, listed for $3870, bought it at $3283, financed for 3 yrs payments of $93/mo.. insurance cost me $50/mo..
(I had a 40hr/wk parttime job fortunately).. which helped pay my car/ins payment and the 6 speeding tickets I received the first 4 months of ownership..