I have received a transcript from a relative of things My Grandfather wrote before his death. Here is what he wrote about Park Motors/Studebaker. In 1925 he quit his job and went to work for a Studebaker Dealer in Park Ridge Illinois. (Jos. McInerney) worked in the service dept until 1928.
In 1928 Along with a Mr. Hoffman and My Grandfather and another gentleman(name not given) from Lake Bluff, Illinois formed Park Ave Motor Sales Inc. and purchased the business from Mr. Jos. McInerney. This business lasted until 1932 when it was closed due to "general worsening conditions".

My Grandfather then started an independent repair shop at 909 West Touhy Ave Park Ridge. Later moved this business to S. Park Ave, Park Ridge In 1939 he sold this business to a Mr Chas. Heisler. He then, took a job as Service Mgr at Lake City Motor Co in Erie Pa.
In 1940 He was called to South Bend Ind, Studebaker Corporation and took a job in the General Service Dept as a Field Service Rep.

Due to poor health conditions in 1941 he left and came to Florida. From your website I found a reference in South Bend Ind. where it listed a Mr Hoffman as President. Not sure if this was any relation to the Mr Hoffman he partnered with to start Park Motors.

Not sure how accurate the addresses for each businesses are. On the Business Card I sent to you it shows Park Motors address as 25 N Northwest Highway Oh well, at least I got some dates and info I was looking for

Clarence E Lohmann
celll@bellsouth.net