Revised effective May 8, 1911, May 3, 1912, and October 19, 1914

Regulations .01—.10 repealed and new Regulations .01—.04 adopted effective August 6, 1990 (17:15 Md. R. 1862)

Regulation .04A amended effective June 15, 1998 (25:12 Md. R. 947)