Yes, the Cleveland Indians have the longest winning streak in major-league history - Bleed Cubbie Blue
Comparing the 1916 Giants and the 2017 Indians' winning streaks - Sports Illustrated
Cubs vs. Pirates Ends in First MLB Tie Since 2005, News, Scores, Highlights, Stats, and Rumors
This Date in Pittsburgh Pirates History
October 4, 1908: Mordecai Brown prevents Pirates from clinching pennant, helps Cubs regain first place – Society for American Baseball Research
Why the New York Giants' MLB record 26-game winning streak stands
1965, NY Mets, "OLD TIMERS DAY" Program (Shea Stadium) Scarce / Vintage
San Francisco Giants: An Interactive Guide to the World of Sports by Tucker Elliot - Ebook
New York Giants (Baseball) Team History
MLB roundup: J.P. Crawford belts slam as M's blast Rangers, Sports
Homer-happy Giants slug 5 more, pound White Sox 16-6 - West Hawaii Today