Favorite this☆ Postal workers in Labor Day parade Description: Uniformed postal employees march in formation at Labor Day parade, with building in background. Recorded in glass negative ledger: "LD/Parades." Details Resource ID: EB02d926 Subject: Labor Day--Michigan--Detroit Parades--Michigan--Detroit Postal service--Employees Glass negatives Date Issued: Unknown year Format: 1 negative : glass ; 4 x 5 in. Member of: Burton Historical Collection Negative Number: BHC glass neg. no. 1410 Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.