These are the 3 vol set that blackbelt magazine published in VHS. Each DVD is about an hour long. I don't know what year they were published, but it was after the original 7 volume set (found on Datu Hartman's site), but before the 15 volume that Jeff Delaney's IMAF sells.
You can buy them from several places. Amazon sells them. I bought mine from budovideos.com. I like them a lot. The only weird thing about it is that the basics (12 angles, blocks, etc) are on volume 2. Volume 1 starts with abinico corto and many of the techniques that flow from that.
It seems that black belt magazine is converting several of their vhs tapes into DVD, which is good, as people like me are more reluctant to buy VHS now. The just released the SCJJ videos from Wally Jay on DVD. The biggest downside to the blackbelt MA DVDs is that there are no chapter breaks in the DVD. if you want to move to a particular part, you must either no the time in the DVD in which it occured or simply fast forward (like old VHS) to reach it. But even with that, it was still worth it for me to buy.
Jon
