I've found similar fonts before, the only problem is the S, if anyone could help out I'd appreciate it

Glenlake  Suggérée par conman1985 

This, coming from the movie poster of the 60's, they probably tore the letrasets by hand...
Start with COMPACTA black and adjust accordingly ... Good luck.

It is essentially custom lettering, originally created for the 1959 book of the same name. Aside from the subtle differences, Compacta wasn't released until 1963.

A much closer possibility is Filmotype Glenlake, originally released in 1955. It's not exact but very close. Maybe something they had typeset and then modified. Of course, there were also a number of similar gaspipe lettering styles that a decent lettering artist could easily whip up too, so it's hard to say for certain.