Ryan Callahan - Wikipedia
Report: Martin St. Louis is 'locked on' the Rangers - NBC Sports
Ryan Callahan has officially retired - Blue Seat Blogs
Rangers, Mika Zibanejad starting delicate dance toward new contract
Return of Ryan Callahan Makes Sense for the New York Rangers
Guelph Storm to honour Ryan Callahan - Guelph News
Ryan Callahan has officially retired - Blue Seat Blogs
Former Rangers captain Ryan Callahan calls it a career - Blueshirt Banter
Ryan Callahan - Stats & Facts - Elite Prospects
Ryan Callahan - Wikipedia