Links from my "Walkman" bookmarks, found in 2008 & 2009 people might find useful. Some might already be referenced elsewhere on this forum.
Agentorange, perhaps you would consider adding the ones that deserve this to your useful Walkman links thread?

Walkman belt replacement guide - great repair site (Japanese - use Google Translate; does miracles!) - instructions for TPS-L2, WM-2, WM-DC2, WM-DD, WM-F701C, WM-EX1 (gold!)

Toshiba KT-AS10 Walky - Japanese; KT-AS10 "Walky" brochure, nice images.
Japanese consumer products from 70-90's - parent directory of above link; loads of stuff - would take a while just to check it. Since directory browsing is allowed, you can also start here

Nice Sony collection - Walkmen & other Sony stuff

Scanned Catalogs & prices - great site; catalog pictures & prices + current value estimates. Found TCM-10 AO owns here

Sony Professional repair - WM-D6C, TC-D5M, TC-D5 PRO II repair service

Loads of boomboxes - Japanese; this is for boombox forum, also some portable TVs