Well, here I am about six days later. Have been run pretty ragged and finally had a chance to assemble some scans. Some of my stuff will duplicate what others have posted. Some pretty cool Tesreau items already.
1910 T210
1911 Postcard - hat tip to Dave Eskenazi for the aloha
1912 NYG Team Portrait - Pach Bros.
One of my most beloved collectibles. The clarity is razor sharp. JT front row 3rd from right.
1912 World Series Opening Game Panoramic Postcard
That would be Tesreau on the mound.
1912 WS - Joe Wood & Jeff Tesreau - Bain photo
1912 Sporting News Supplement
1912 Team photo 8x10 size, photographer unknown. Apologies for poor snapshot.
Detail:
1913 NYG Team Portrait - Pach Bros.
JT behind mascot to left
1914 Cracker Jack
1916 M101-5
1917 Collins-McCarthy
1930 Boston Post Old Timers Game
Tesreau was the baseball coach at Dartmouth in those days. Seen in back row, fourth from left.
They say Charles Tesreau was nicknamed "Jeff" because his teammates thought he resembled the boxer Jim Jeffries. I'm not seeing it except for the big head but who knows.