From 36 years ago this month, we have a
Los Angeles Times article about the Disneyland Custodial Department:
A quick search online reveals that custodial manager, Ray Sidejas, retried from Disneyland in 2011 after 46 years of service!
Incidentally,
The Fantasyland Theater, which can be seen in the background of that photo above, was torn down just about four months after this article ran.
Portions of that "loose-leaf notebook" which was given to newly hired members of the custodial crew, can be seen here on the "Jungle is 101" blog:
Disneyland Custodial Dept. - Welcome To Our Custodial Team.
Skyway alert!