This weekend's lost live album is the Doors at the Matrix in SF in March 1967.
I tried to find Absolutely Live on spotify, but couldn't find it. Instead they had a bunch of live shows from the 1970 tour as part of the Bright Midnight series, and one show from the Matrix in SF in 1967, just after the release of their debut album and before they broke nationally.
The Matrix is a tiny little club in the upper Fillmore with a capacity of under 200 that's featured some of the best live performances ever, by the Jefferson Airplane, the Flamin Groovies, and others. It was the first place the Doors ever played outside LA, before anyone knew who they were, and it sounds like there's almost no one at the club. They played almost everything from their first two albums, without any teenybopper screaming or poetry breaks, sounding like a band on the way to bigger and better things. Which they were.