Yoshinkan video and book for sale
I recently put up a 1990 video and book on eBay. If anyone is interested, a quick search under 'yoshinkan aikido' will find them.
The VHS was published out of Japan and is from the Gozo Shioda line of instructional videos. As far as I can tell it is no longer available in any form (SPA-8003), and so it would be of interest to either collectors or new students. The book, by Gozo Shioda, is an introduction to Yoshinkan form. The text is exceptionally clear on technique and the photos are excellent. I found both useful when starting my training.