Google search "watson treasurer Flin Flon" came up with many results. Among them:
http://manitobia.ca/resources/books/local_histories/145.pdfhttp://manitobia.ca/resources/books/local_histories/031.pdf Second has pictures of Earl and Noreen. He was a member of a barbershop quartet, p. 187,
and was treasurer of the city of Flin Flon for 15 years until March 1983, p. 208.
Control F will allow a search within the pdf. There are a few references to Earl.