Midwest Record Pressing, Inc.

1960s record pressing company in Chicago, Illinois.
For the earlier incarnation of the company, see [l=Dunn Record Pressing Co.]

Owned by [l=Chess Records] during the 1960s, acquired by [l=GRT Corporation] in 1969 as part of the Chess buyout. GRT closed the plant in 1970 citing high labor costs. Records from this plant can be identified by a "WM" or "MW" (depending on reading direction), followed by a three or four digit number sometimes on the label, always etched into the runouts.