I Wonder What They Found

September 11, 1974 Disneyland Line:

At the present time, the Disney University is doing research on the history of the Park. In trying to re-create Disneyland as it has developed through the years, they are tracing the changes that have taken place both on and off stage. If you have any old maps, photos, guide books, or any other historical data, the University would greatly appreciate your help. All material used will be Xeroxed and returned. For further information or inquiries, please call Jon Worsdell at the Disney University at Ext. 641 or 642...Thanks!

What motivated them to research the Park's history at this point in time? A specific training program? Did anybody submit anything that we today would find amazing? What did the University eventually do with the material?