It was Eaton's up to the very end. In Quebec they dropped the 's, but everywhere else it stayed Eaton's.
I was unaware that the Ottawa Public Library had those kinds of things. I've been to the library maybe 5 times in the 20 years I have lived here, and it was never the main branch downtown. Not sure when you were at the OPL last, but I don't know if they would still have that stuff.