The actor was best known as "Doc" on the Jim Henson children series
Actor Gerard Parkes, who played Doc on 'Fraggle Rock,' dead at 90
Gerard Parkes - IMDb
Fraggle Rock actor Gerard Parkes dies
Gerard “Gerry” Parkes (1924-2014) - Find a Grave Memorial
The Littlest Hobo (TV Series 1979–1985) - News - IMDb
Gerard Parkes, Doc From 'Fraggle Rock', Dead At 90
Gerard Parkes, 'Fraggle Rock' and 'Boondock Saints' Actor, Dead at 90 - TheWrap
Television News, Ratings, TV Show Reviews - TheWrap Covering Hollywood
Gerard Parkes - IMDb
Gerard Parkes
Gerard Parkes, who played Doc on 'Fraggle Rock,' dies at 90
What The Cast Of The Boondock Saints Looks Like Today