In the novel the poster was for “Niagara”
Yep. But Miss Monroe had already died at that point and “Niagara” was a 20th Century-Fox film. It made perfect economic sense for both EON and UA to plug “Call Me Bwana” instead. I’m guessing more people have either seen or tried to see the 1963 Bob Hope comedy for the reason it was in FRWL alone.