As far as I know the Teagarden LP-set is included in the Mosaic (the usual disclaimers apply, though ). Here's the producer's note of the Mosaic set:
"This Mosaic release brings together all the masters from the OKeh and Brunswick label plus any other masters from the Columbia family of labels that have sessions led by Bix Beiderbecke, Frank Trumbauer and Jack Teagarden. However, we’ve decided to stray from the vision a bit and include those Columbia masters of Bix and Tram where they are in the role of sideman as well. These include the Arkansas Travelers (A), Broadway Bell Hops (I), Willard Robison/Chicago Loopers (L), Bee Palmer (Y) and Bing Crosby (NN) (OO) sessions. We have decided not to include the Joe Venuti Blue Four session (with Tram) of October 18, 1929 (“Runnin’ Ragged” and “Apple Blossoms”), which will be available as part of a Venuti-Lang package on Mosaic. Brunswick masters that were recorded prior to November 17, 1931 are not included since they are currently under license with Universal / Polygram."