Though many fall into obscurity over time, curious crate diggers rediscover these long-lost gems, some of which fetch hundreds or even thousands of dollars per copy.
The latest episode of Collector's Crossroads featured a wide selection of these releases. Take a listen to the songs via the Spotify playlist below.
Collector's Crossroads airs on CPR's OpenAir Thursdays at 3 p.m., Saturdays at 6 p.m. and Sundays at 4 p.m.
Follow CPR's OpenAir on Spotify for more curated playlists.
You love listening to new music and learning about Denver's music scene. We have a weekly newsletter for you -- Inside Track. Sign up here to stay in the know about Colorado musicians making new music and the new releases you should be streaming.