W T Cowan Inc
Baltimore, MD
MC-064650 DoT 110430
aka Cowan Enterprises
Company Website
FMCSA Company Snapshot
Facebook - Cowan Systems LLC
Youtube - Cowan Systems
Route Map - 1972
Trucking Pioneers Book II, pages 77-82
Acquisitions
Patches of it that are in my project - Facebook Trucking Industry Insignia Patches
Other known patches
If you want your own memoribilia:
Items available on eBay
Note that patches sold by "freedomfifty2k" and "bob82ndabn325inf"are likely promo/replica patches, not patches actually used by the company represented.