the GRD is a great way to find what names are being researched by others.
It is published yearly (I think). Under surnames, you will find a list of
details pertaining to what years and what locales someone is researching
for a particular name. There would be a cross-referenced number listed that
corresponds to a researcher's name and address. You could then write to
that person. You can also place an ad in the GRD so someone else can find
you. Of course only those who put their names in are listed. It used to be
that if you put in an entry, you'd receive that edition free (one yearly).
In my experience, it's a great source for unusual names but not so great
for really common ones (e.g. Hughes in England).
I have access to the GRD through my local genealogical society and through
the Mormon's Family History Centre. Perhaps the OGS would have copies, or
the Genealogical Research Library in Toronto? I haven't used it for a
while, so maybe someone else could add to/correct what I've mentioned here.
Could someone please explain what the Genealogical Research Directory
what information it provides) and where it could be found in Canada