WTB 1909 Rose Postcards of any member of the NY Highlanders/Yankees
 

The NY Highlanders included in this set are: Hal Chase, Wee Willie Keeler, Charlie Hemphill, Red Kleinow.
...and Al Orth (thanks K Naidu for this info.)
...and Chesbro, Conroy, Elberfeld, Glade, Newton, Niles & Stahl. (and more thanks to Baseball Rarities for providing me with the full list!)

Each of the 16 Major League teams had 12 subjects in the set. Here is the checklist for the Yankees/Highlanders:

Chase
Chesbro
Conroy
Elberfeld
Glade
Hemphill
Keeler
Kleinow
Newton
Niles
Orth
Stahl

Also, the postcards were first available in summer of 1908.

1909 Rose Postcards
 

Thanks Rarities! I like having an accurate accounting of what’s out there, even though I’ll likely not see most of these in my lifetime. If you ever see one of these up for grabs, plz let me know. I have only started looking for them recently and I can appreciate how rare they are already. Thanks again for the info!