In the 1930s, May joined
DuPont as part of a research team which developed the first
rust-proof
paint. He was hired by the American Can Company in 1940, based in a laboratory in
Maywood, Illinois. May became head of the
American Can Company and shepherded the company through fifteen years of expansion and growth from 1965. He spearheaded American Can Company's relocation of its
corporate headquarters to
Greenwich, Connecticut, in 1972. May was elected to the
Lincoln Center for the Performing Arts' board of directors in 1967. He was tasked with establishing a new film department for Lincoln Center. He worked as the program's chief fundraiser, while two other members of the committee handled artistic contributions,
Richard Roud and
Amos Vogel, both of whom founded the
New York Film Festival. However, Lincoln Center withdrew financial support from the committee in 1968 due to financial woes. May searched for new financial donors. In 1969, May and two Lincoln Center executives,
Schuyler G. Chapin and
Martin E. Segal, co-founded the
Film Society of Lincoln Center. == Retirement ==