The Mousekateers appeared in public for the first time, on the day of Disneyland's opening, on July 17th, 1955..while this appearance was televised in black and white, Disney had the rehearsals filmed in COLOR.. so, here are the Mouskateers, as they appeared on TV, in black and white, the color rehearsal sections are edited in..this is pretty terrific..great memories for all of us who were kids in the mid '50's ~