The main and principal entrance of principal buildings on Lots 106, 107, 108, 109, 174, 175, 176, 177, 242, 243, 244, 310, 311, 312, 395, 396, 397, 398, 471, 472, 473, 474, 539, 540, 541, 542, 607, 608, 609, and 610 of Tract 7710 shall front on Olympic Boulevard. (1962 Code § 10-529; amd. Ord. 95-O-2239, eff. 7-7-1995)