Complex sentence: Mell Kilpatrick (1902--1962) was chief photographer for the Santa Ana Register (known today as the Orange County Register) and one of the only photographers allowed into Disneyland during construction in 1954-55.
Split into simpler sentences: Mell Kilpatrick (1902--1962) was chief photographer for the Santa Ana Register, known today as the Orange County Register. He was one of the few photographers allowed into Disneyland during construction in 1954-55.