Subject to the requirements of law and of the regulations of the Post Office Department, franked self-addressed envelopes may be used for communications from the field staff to a State official designated by the Division and the Secretary of Labor, and for communication from the State agency to the Division or the Secretary of Labor.
source: 13 FR 2161, 2163, Apr. 22, 1948, unless otherwise noted.
cite as: 29 CFR 515.7