Lots of Drouin records are also available in a book series- mine were in the book:
"The Anglo-Protestants of Megantic County Repertory of Births, Marriages and Burials 1826-1991"
The book is in a few genealogy libraries in Canada and in the Eastern Township Research Center, McGreer's Hall, Bishop University, Lennoxville Quebec.
Their website was www.etrc.ca
but haven't been to it since 2006. Its basically the archives for Eastern Township region of Quebec.- Mary