Bose® 301® Series IV (Black) Bookshelf speakers at Crutchfield
Bose 301 Series IV Direct Reflecting Speakers - Pair | Reverb France
BOSE 301 Series IV Service Manual Original Direct Reflecting Speaker System | eBay
Bose 301 Series III Direct Reflecting Bookshelf Speakers in Walnut Woodgrain | Reverb
Bose Direct/ Reflecting System Bookshelf Speaker 301 Series IV Right & Left | eBay
BOSE 301 Series IV Service Manual Original Direct Reflecting Speaker System | eBay
301 Series V - Bose 301 Series V - Audiofanzine
For my fellow Bose 301 owners, I recently found out they're actually supposed to be positioned horizontally! It does sound better, at least to my ears. : r/vintageaudio