Adoption laws in canada around the 50's..?

i was just wondering what the laws are on adoption. my grandma gave her first son up for adoption in the late 50's, and of course.. it was a closed adoption. years and years ago, she tried to find him.. but with no luck. she's 70 now, and not doing so well.. and i know she'd love to meet him. i've been trying to find out the laws and find out if there's any way for her to find out anything.. but i havent had much luck and was hoping someone on here could enlighten me. i know that adoptees can get info on their birth parents(assuming the laws on closed adoption has changed..), but i was wondering if it can go the other way, too. she was flown from pei to bc for the duration of her pregnancy and gave birth to her son somewhere in the vancouver area.. if that makes any difference whatsoever.