My wife's wonderful Aunt Sandy found a little treasure trove of Disneyana from several trips to Disneyland and Walt Disney World through the years. She sent them to us with a nice note saying she thought of me and my wife when she found them. Did I mention she's wonderful?
The first piece I'd like to share is a ticket book. Ticket books were used from July 18, 1955, the official opening day to the public, when there was a Main Gate admission price and each ride or attraction cost between 10¢ and 35¢ in cash. Disney introduced lettered tickets in October 1955, because people felt they were being "nickeled and dimed!"
The "D" tickets were added in 1956, and the famous "E" ticket was introduced in June 1959 after the opening of the Matterhorn, Monorail, and Submarine attractions. Lettered tickets were phased out in the early 80's in favor of the all inclusive admission pricing we have today.
Adjusting for inflation, that would be approximately $32 today.