I don't think I was aware of this record but here it is in the yesterday's column of the Hungry Horse News.
Belated congratulations to Mr. Ankenbauer!
How is your list doing, Selkie?
"Sept. 11, 2013
Marc Ankenbauer, a seasonal employee in Glacier National Park, finished a 10-year journey by swimming in all of the 168 named lakes of Waterton-Glacier International Peace Park. Ankenbauer saved Fishercap Lake in Many Glacier as the last lake of the journey. The worst lake was Lilly, on the backside of Adair Ridge."