Chicago Transit Authority

Why the first run isn't included is a mystery. 
https://www.discogs.com/Chicago-Transit-Authority-Chicago-Transit-Authority/release/10803461
The percussion breaks on "Beginnings" and "I'm a Man" are no less than spectacular.

I'd like to hear this Brazilian mono press
https://www.discogs.com/Chicago-Transit-Authority-Chicago-Transit-Authority/release/7216145

Why is the original period release NOT being acknowledged as among  likely "best" sounding release? Forget the reissues.

It's not rocket science.

There were several iterations released in 1969, but this version is still easy to find with a little effort.
https://www.discogs.com/Chicago-Transit-Authority-Chicago-Transit-Authority/release/2172078
Finding a clean issue is the challenge. The reward is the sound will trounce any overpriced reissue.

The previous post are the "stamper" copy which will be even harder to find, but possibly closer to "the absolute sound" for audiophools.

robert53-

discogs is a great reference to check the pedigree.

Not enough info to check? My suspicion that is a later reissue. There were plenty of those around in the 70's.

Is there a bar code on the back? If so, definitely a reissue. Not a bad thing, just gives an idea how far off from a period press it is,hence,how far it is from "the master tape" and the stamper used.

If you're ever curious of its provenance,  check the runout  info on discogs
as mentioned earlier.
https://www.discogs.com/Chicago-Transit-Authority-Chicago-Transit-Authority/master/83123

Original presses are not a guarantee for "best" SQ, but always a sure bet to put them on your list of what to check out.