This is just terrific, The Mike Wallace Interview from the late 50s are online.

There are 65 interviews in the Ransom Center’s collection. Five are on audio tape, and the others are kinescopes, 16mm recordings of the television programs made by filming the picture from a video monitor. These 16mm films were transferred to video and, along with the audio tapes, were digitized. The interviews were then transcribed and were both embedded in the video files in the form of subtitles and included on the website as text files.