Hi Rod,
Many thanks for the last batch.
Reference ICAO Code - CMH [Commair Aviation Ltd] it's being used by N44NE a Cessna 414 and has been noted on a few occasions with a CMH call sign if this helps narrow down the search a bit.
If possible here is the new batch seen in your absence that require logo's.
DIMAH - Mahle GmbH
N497EC -EDF LLC
N623CT - United Healthcare Inc
N1BB - Bollinger Enterprises LLC
N665JN - Jackson National Life Insurance Co
N40TE - Cisco Systems LLC
N785QS - Harbour Freight Tools
N350MB - Mathis Bros
N110SN - SBE Entertainment Group
N65WL - Willis Lease
MTSLT - Skyline Aviation
Regards
Cameron