about the WEST SIDE STORY SEGMENT

I have a question for the west side story segment. in this segment, there is a short video clips of the number " tonight", featuring original star larry kert and carol lawrence. and from the angle of camera and the dress of carol, i don't think it is from the ed sullivan show, which is said to have the only video clips of the original cast. does anybody have any idea about where is this clips from? thank you very much