Try Model Land and/or PM Hobbycraft; both in Calgary; they will do mail order of Evergreen products; both have a great supply / inventory.
Address: 2020j 32 Ave NE, Calgary, AB T2E 6T4
Phone: (403) 291-2733
Address: 3409A 26 Ave SW, Calgary, AB T3E 0N3
Phone: (403) 249-1661