You're a Good Man, Charlie Brown - 1973 TV Cast

It should be noted that this seems to be from a later rebroadcast that cut sequences from the original broadcast, which was shown in a 90-minute time slot. There were later rebroadcasts shown in a 60-minute time slot. The Paley Center lists a running time of 1:16:58 for the full version that is in their collection.

https://www.paleycenter.org/collection/item/?q=%22you%27re+a+good+man%2C+charlie+brown%22+hallmark&f=all&c=all&advanced=1&p=1&item=T85:0155