I received this picture from the Wrather family which was in a portfolio of historical Disneyland Hotel photos. It's a great shot of the Mickey Mouse Club Mouseketeers being filmed at the Disneyland Hotel. I was told these pictures were from 1956 or 1957. Looks like a big crowd to watch the activities which also includes a band and the KTLA cameras and film crew. See the close-up photo below with more details. I will post more of these pictures from the Wrather family periodically.