Career
He has edited numerous prominent authors such as Vernor, Joan Doctorate., Frederik Pohl, Andre Norton, Loren Doctorate. Estleman, Dan Simmons, Jack Williamson, Timothy Zahn, Marie Jakober and Greg Bear. His agency clients include John C. Wright and L. Jagi Lamplighter. In 1968, Frenkel founded The Science Fiction Forum at the State University of New York at Stony Brook, a student-run organization which continues to operate a large lending library of science fiction, fantasy, and horror books
He was the publisher of Bluejay Books, an independent trade publisher of the mid-1980s.
Bluejay Books published Gardner Dozois"s The Year"s Best Science Fiction for three years. He also was the packager of The Year"s Best Fantasy and Horror series edited by Ellen Datlow and Terri Windling (for sixteen years) and then Ellen Datlow and Kelly Link & Gavin J. Grant (for five years).