She graduated from Columbia University and lived for years in Phoenicia, New York.
I'm taking a risk that it's the same person, but I did find a tiny notice for a Beulah Tannenbaum at a retirement center in Newtown, Pennsylvania, and it also said she moved there in 1985, which would have been somewhat reasonable for someone who was born in 1916. Also, one source says that a Harold Tannenbaum was living in Newtown and had a connection to Beulah. (For the record, Harold died in 2002, according to one of his two sons.)
From "Contemporary Authors":
CAREER:
Karamu House and Cleveland Foundation, Cleveland, Ohio, educational director, 1938-41; Ethical Culture Schools, New York City, science specialist and librarian, 1942-49; Downtown Community School, New York City, science consultant, 1950-52. Trustee, Elting Memorial Library.
https://pennswood.org/wp-content/uploads/2019/10/WeeklyBulletin.pdf
(her name appears on page 9; she may have died before October)
https://woodlandvalleyview.blogspot.com/2008/08/tannenbaum-house.html
(from 2008, about the Tannenbaum house - her son indicates she was alive at the time of the writing)
https://www.abebooks.com/servlet/SearchResults?an=Beulah+Tannenbaum+&pics=on&sortby=17&cm_sp=pan-_-srp-_-dj
(a few book covers)
https://www.amazon.com/Isaac-Newton-Pioneer-space-mathematics/dp/B0007DYG32
(cover of "Isaac Newton")
WRITINGS BY THE AUTHOR:
(With Harold E. Tannenbaum) Science of the Early American Indians, F. Watts (New York, NY), 1988.
(With Harold E. Tannenbaum) Making and Using Your Own Weather Station, illustrations by Anne Canevari Green, F. Watts (New York, NY), 1989.
With Myra Stillman, except as indicated; published by McGraw:
Understanding Maps , 1957, revised edition, 1969.
Understanding Time , 1958.
Isaac Newton: Pioneer of Space Mathematics, 1959.
Understanding Light , 1960.
Understanding Food , 1962.
(With husband, Harold E. Tannenbaum) Experiences in Science , 1966.
Feeding the City , 1971.
City Traffic , 1972.
Clean Air , 1973.
Understanding Sound , 1973.
High Rises , 1974.
(With H. Tannenbaum) Science Modules , 1976.
Lenona.