The first three disks feature his Sennett films, the surviving shorts and the restored feature His First Flame. I had seen "Saturday Afternoon" many many times, but I had seen only one or two of the others. Extras include the surviving fragment of one of his Sol Lesser shorts and some of his Sennett films which had been butchered for television presentation.
The fourth disk has a couple of his talkies, a special short he did for Roach to introduce him to exhibitors, a soundie, and home movies.
I feel I know Harry Langdon better now.