Richard Maibaum episode "The Medal" for "Combat!" (1963) then wrote "From Russia with Love" (1963), sharing credit with Harwood. Maibaum worked on "Goldfinger" (1964), on which Paul Dehn also did work. He was one of several writers on "Thunderball" (1965). "You Only Live Twice" (1967) was the first Bond film on which Maibaum was not credited as a writer, the producers using Roald Dahl. Albert Broccoli wanted to produce a non-Bond movie, "Chitty Chitty Bang Bang" (1968) and Maibaum did some work on the script. Maibum received sole script credit for "On Her Majesty's Secret Service" (1969), starring George Lazenby. He did
Chitty Chitty Bang Bang range from the celebrated Far Tottering and Oyster Creek Railway to the demented thingamabobs that made the 1968 movie "Chitty Chitty Bang Bang" a minuscule classic." Six "Chitty-Chitty Bang-Bang" cars were created for the film, only one of which was fully functional. At a 1973 auction in Florida, one of them sold for $37,000, equal to $ today. The original "hero" car, in a condition described as fully functional and road-going, was offered at auction on 15 May 2011 by a California-based auction house. The car sold for $805,000, less than the $1–2 million it was expected to reach. It