On the picture above: Walt Disney and Art Director and Disney Legend Bill Martin in 1956 standing on the construction site of Mine Train Through Nature's Wonderland. Just behind Walt's head, you can see the construction of the Skyway Fantasyland station.
Now, if it happen that you've also never watched yet in its full the 1955 Disneyland Grand Opening Show then i also have for you the full 1955 ABC broadcast with the video below.
A last video with the one who was not only there on Disneyland opening day but also there on openings of all Disney theme parks in the world: WDI Imagineer and Disney Legend Marty Sklar. In this Orange County Register video posted last Wednesday Marty talks about Main Street windows that honor Disney Imagineers and Operators associated with the creation and operation of Disneyland. For many years Marty Sklar, was involved in writing the text on those windows that line Main Street, U.S.A.
Video: copyright ABC, Disney, Orange County Register