A decade ago I posted about the project to revise the Dictionary of Canadianisms on Historical Principles, whose first edition appeared in 1967. The revised second edition is now online here, free for anyone to access. As Dave Wilton says at Wordorigins.org (where I learned about it):
The new edition not only includes words that have appeared since 1967, the editors have also cleaned up questionable entries for older words—for example, the DCHP-1 had separate entries for toque and tuque, which are now combined into one. As well, many entries have full color, photo illustrations and charts showing the term’s use across the provinces or through time. […]
Users of the DHCP must be aware, however, that the dictionary only includes citations from Canadian sources. So when a term is older in other dialects, the older citations will not appear. This editorial choice, while a valid and justifiable one, means that users cannot rely on the DHCP alone, but must use it conjunction with more comprehensive sources like the OED. Still, this isn’t going to be a serious limitation to most users.
Hurray, say I!