The Irving B. McNulty papers (1950s-1990s) consist of his curriculum vitae, copies of two talks he presented in the 1970s, a memorial tribute to Walter P. Cottam, and reprints of some of his publications and some he authored with others. McNulty was a Professor Emeritus of biology at the University of Utah. Included in the collection is correspondence written by McNulty to Louise Garrigues while he was working and traveling internationally.

Irving “Bill” McNulty (1918-2000) was a professor of botany at the University of Utah who was involved in the establishment of Red Butte Gardens and the State Arboretum in Salt Lake City, Utah. This collection consists of 3 photographs of an unidentified man, presumably McNulty.