The original Jazz 625 concert has been released on DVD several times and also often appears on YouTube.com, though usually without rights.
The concert is about 35 minutes. Stefan Grossman and his company Vestapol are the official US distributors of the footage, which is divided up onto two separate DVDs.
Here are links to the DVDs on Stefan’s site:
Each link has information about which songs are on which DVD. You can also purchase the DVDs from the site.
ETA: Torsten Meise from WesMontgomery.de has written with some additional information for Europeans and others with interest in the PAL format:
“PAL-versions of the Jazz-Legends-DVDs are available through their British store http://guitarworkshopuk.com — maybe that’s interesting for your European customers.”