Mary Ann Horton, formerly Mark R. Hortoncitation needed, was a Usenet pioneer. Horton co-wrote the B News server software. Horton worked at Bell Labs for twenty years1.
In the early 1970s, Horton designed and implemented the HORTRAN compiler. He was an expert user of early networked computing systems, such as the HP 2000 minicomputer, and provided fellow students with valuable advice that led many to life-long careers in computer science and related fields that rely heavily on computing.