The 1948 Superman serial is one of many titles lost when the DC Universe streaming service was folded into HBO Max, and still hasn't shown up on the service two years later.
Superman's Theatrical Film Serial came in the mail today! : r/superman
Superman, Serial, Kirk Alyn, Chapter 9 Framed Print by Everett - Fine Art America
Long before the current Superman hype, there was a cartoon, and a serial
Superman - The 1948 & 1950 Theatrical Serials Collection : Kirk Alyn, Noel Niell, Tommy Bond: Movies & TV - Amazon.com
SUPERMAN (1948) Feature Compilation : Warner Brothers : Free Download, Borrow, and Streaming : Internet Archive
ATOM MAN vs. SUPERMAN SERIAL CLIFFHANGER 15 CHAPTERS ON 2 DVDs - Media Collectibles
Superman Homepage
Superman, Serial, Kirk Alyn, Chapter 6 Art Print by Everett - Everett On Demand
Superman (1948) - IMDb
Amazon.com: Superman: Serial [VHS] : Kirk Alyn, Noel Neill, Tommy Bond, Carol Forman, George Meeker, Jack Ingram, Pierre Watkin, Terry Frost, Charles King, Charles Quigley, Herbert Rawlinson, Forrest Taylor, Spencer Gordon Bennet,
Superman (1948 Serial) – Multiversity Comics
Superman (1993) | ČSFD.sk
Superman (TV Series 1948–1950) - IMDb
Superman 1948 Movie Serial Review — When It Was Cool - Pop Culture, Comics, Pro Wrestling, Toys, TV, Movies, and Podcasts
Superman: Serial to Cereal | Gary H. Grossman
New/Sealed SUPERMAN THE SERIAL (1948) Complete Adventures 3 Disc LASERDISC Ref:b | eBay