Besides magazine cartoons, Gerberg has drawn several nationally syndicated newspaper comic strips. His comic strip Koky, co-created and written by Richard O"Brien, was syndicated from 1979 to 1981 by the Chicago Tribune-New York News Syndicate. (In 2007, Ramble House collected the strip"s entire run into two books, one collecting the dailies and the other collecting the Sundays)
Gerberg has written, edited and/or illustrated over forty books
They include Cartooning: The Art and the Business, LAST LAUGHS: Cartoons About Aging, Retirement.
Gerberg is a popular public speaker on the subjects of cartooning and creativity. He has appeared at numerous universities, conferences and seminars.
Gerberg has also written, drawn and performed on National Broadcasting Company, American Broadcasting Company, and Public Broadcasting Service television news shows. Gerberg has been an information content provider for American Broadcasting Company Multimedia, Prodigy, America Online, and BookWire.com.
Gerberg taught cartooning at New York City"s Parsons School of Design and The New School distance learning program
One of Gerberg"s former students was Wall Street Journal caricaturist Ken Fallin. In 1968, Gerberg signed the “Writers and Editors War Tax Protest” pledge, vowing to refuse tax payments in protest against the Vietnam War. On Election Day, November 7, 1972, Gerberg appeared with Barbara Walters on the Today Show, drawing cartoons while being interviewed.
On January 20, 1973, Gerberg appeared with Edwin Newman on National Broadcasting Company-television"s live network coverage of Richard Nixon"s second inauguration, drawing cartoons and commenting about the ceremony.
Gerberg appeared in the Public Broadcasting Service documentary Funny Business: An Inside Look at the Art of Cartooning (2011), drawing attention to the creative and personal sides of several New Yorker cartoonists. In 1989, Gerberg appeared as a special guest artist in the Shari Lewis video, Lamb Chop in the Land of Number Manners.