Hi Marcia,
If you haven't done so already, please register yourself with the Alberta Post Adoption Registry office to receive non-identifying information about your brother and as well to register yourself there in the case if he registered himself there, they would reunite you
The forms can be downloaded from
http://www.child.gov.ab.ca/whatwedo/...0for%20Reunion
Under "Birthsibling"
You might try requesting his birthdate as well, although they may just give you the year.
Hope this helps!
~Shannon