Trade practice rules: 1940s
Browse industry trade practice rules by their recorded promulgation date. Rules without a valid recorded year appear in the undated group.
- Masonry Waterproofing — Aug. 31, 1946 · 8 mentions
- Wood Cased Lead Pencil — June 29, 1945 · 1 mention
- Catalog Jewelry and Giftware — Dec. 23, 1943 · 17 mentions
- Subscription and Mail Order Book Publishing — Sept. 3, 1940 · 3 mentions