In which lake or lake chain was the world's largest musky caught?

Answer 1

The US record is New York 69 lbs 15 oz St. Lawrence River Arthur Lawton 1957

Answer 2

Chippewa Flowage in 1949 by Louise Spray. The Muskie was 69-pound, 11-ounces.

"On Aug. 6, 1992, Art Lawton's world record
Muskie, originally thought to have been 69 pounds, 15 ounces and 64 1/2 inches long, was discovered to have been falsified (greatly exaggerated in size) and was officially disqualified jointly by both the National Freshwater Fishing Hall of Fame and the IGFA.

As a consequence of that decision, Louie Spray officially was reinstated as the all-tackle world record holder of the Muskie with his 69-pound, 11-ounce fish that he caught out of the Chippewa Flowage in 1949."

Answer 3

Bon Malo caught one on Middle Eau Claire Lake, Bayfield County, Wisconsin. It was 69 lbs., 12 oz. or 70 lbs. depending on the scales that were used.

Here's the story:

http://toothycritters.com/malo.html