Favorite this☆ Gray Motor Company thresher Description: Partial view of thresher from Gray Motor Co.; automobile parked on side of dirt road. Recorded in glass negative ledger: "D/Industries & business houses-Gray Motor Co." Details Resource ID: EB02f982 Subject: Threshing machines--Michigan--Detroit Glass negatives Date Issued: Unknown year Format: 1 negative : glass ; 8 x 10 in. Member of: Burton Historical Collection Negative Number: BHC glass neg. no. 4118 Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.