Boston Red Sox introduce Wally's little sister, Tessie
Wally's Opening Day' Rekindles New Spring Tradition For Red Sox
Boston Red Sox mascot gets a little sister - Sports Illustrated
About Tessie the Green Monster
Wally the Green Monster - Wikipedia
Littlest Sox Fan — Meet The Spearsons
Evan and Lauren's Cool Blog: 5/18/16: Boston Red Sox Game Kid
Wally the Green Monster Has a Little Sister - Boston Magazine
Tips and tricks for making the most of a visit to Fenway Park