Jack "Twin" Sullvian was born on September 23, 1878 in Cambridge, Mass. He was a light heavyweight contender in the early 1900's and fought Philadelphia Jack O'Brien, and Tommy Burns, among others. Presented here is a signed letter. Jack "Twin" Sullivan has boldly signed this 8 1/2" x 11" letter in black ink. The letter was addressed to Nate Fleischer. In it Sullivan asked for copies of the Ring magazine that the twins were featured in. There is 1 horizontal crease and 2 vertical creases where the letter was folded. There is a small rip on the right side of the page in the crease and on the left side of the page. There are several small creases along the left and bottom edges.