After a brief period in the U.S. Cavalry Reserve, Andrews joined Prentice-Hall in 1935 as a travelling representative for the college‑textbook division.[3] He became sales manager in 1939 and head of the division in 1947, overseeing its emergence as one of the two largest collegiate publishers in the United States.[3] In 1965, he became the president and chief executive officer of Prentice‑Hall.[1][2] Under his leadership, Prentice‑Hall introduced high‑speed warehousing that could ship more than 100,000 volumes daily and recorded record revenues.[1] He was elevated to chairman in 1971 and retired in 1976.[4]
Andrews served on the board of Norwich University, as well as on those of the American Textbook Publishers Institute and the National Association of College Stores.[1]
In 1958, Andrews was elected to the board of trustees of Norwich University and later chaired the university's development programme from 1972 to 1982.[1][4] He also served on the board of American Textbook Publishers Institute and the National Association of College Stores.[1]