This one is not really one of the best-remembered Batman/Superman tea-ups but it's kind of fun. Essentially a variation on the classic BREWSTER'S MILLIONS (later done well in a JIMMY OLSEN comic of the sixties), Batman has to spend $1,000,000.00 in 24 hours as a secret proxy for an injured man. Superman and Robin think he's flipped as he isn't allowed to tell them so they secretly work to MAKE him money from his seemingly frivolous spending!
Flash now had his own magazine. Things were changing rapidly.
Here we have a pre-Odd Couple odd couple in a classic sitcom-style moment.
Kirby, Kirby, Kirby!