The family here in BC knows NOTHING about Mildred or her husband Arthur. Don't have contact info for other family members.
What I do know: their names, Mildred was born in the U.S. about 1900, Mildred's date of death, her naturalization in the 1920s, that they lived in the Camrose area. What I don't know: their places of birth, Arthur's date of birth, his date of death, where they are buried. I assume they were married in Alberta, which seems reluctant to give out info.
I did find an obituary for their daughter & got a name from that; a fellow who tried to help but didn't know much.
I have found a couple of Mildred Rhea's with the same or like-sounding surname, but they have turned out to be wrong ones. Nothing on family search for them (too recent I think.)
I will definitely check into the alberta history book, though.
Thanks for your suggestion; I'm still on the search!
Jane