Addressing the Proposed Rules on Petrified Wood Usage: A Letter to Oklahoma Mineral and Gems Society1963-10-03unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_038_8_32_22_0016The letter acknowledges receipt of a letter concerning proposed rules about the free use of petrified wood. The sender contacted the Department of the Interior for further information and will follow up with the recipient once a reply is received.