I just wanted to confirm that there is indeed a four-page booklet for S4. My copy from Amazon contained it, along with a flyer for a book on the show.
All of the DVD-on-DVD boxed sets contain the 4-page mini-booklet, which are jam-packed with info on the show & its cast members. (The writing's a tad bit small to fit all the text in; but not TOO small.)
That Van Dyke Show book mentioned in the other enclosure is THIS ONE
, which (BTW) is terrific from start to finish. The perfect companion to these DVD season sets.