(not a download request) - it seems (Canadian) Clarence Lucas (1866-1947) composed a few symphonies, possibly?? before Healey Willan's first of 1936 (don't know! ) - any idea?
Note: the composer Calixa Lavallée (who besides O Canada wrote some other works of interest, some uploaded to IMSLP :) ) apparently did write a symphony for chorus and orchestra - "Symphony 'dedicated to the city of Boston.' Chorus, orch. Ms lost" - which I'm guessing predates the Lucas symphonies since Lavallée died in 1891 (well, the Lucas might be early and the Lavallée work late, true - it is lost and unlike the Alkan lost symphony of which one at least has some information to base an approximate date on, apparently very little is known about this one. See the Canadian Encyclopedia. (http://www.thecanadianencyclopedia.com/index.cfm?PgNm=TCE&Params=U1ARTU0003859))