Tessie & Wally - Boston Red Sox
A pictorial history of Wally the Green Monster as he's grown, and
Wallowa Lake Monster, Cryptid Wiki
Boston Red Sox introduce Wally's little sister, Tessie
The Poetry of Nick Names - The Other End of the Leash
Where's Wally? The Kidnapping of the Red Sox Mascot
Where's Wally? The Kidnapping of the Red Sox Mascot
Boston Red Sox mascot gets a little sister - Sports Illustrated
Wally the Green Monster - Wikipedia
Meet Tessie! Wally's little sister, Tessie, is coming to Boston