Federal Registers
- 1910.144 - 12/23/1997 - 62:67096-67098 - Washington State Standards; Notice of Approval - PDF
- 1910.144 - 02/10/1984 - 49:5318 - Color Coding
- 1910.144 - 02/10/1984 - 49:5318 - Revocation of Advisory and Repetitive Standards
- 1910.144 - 05/28/1982 - 47:23480 - Color Coding