[Docere]

I haven't seen a map - maybe an old Canada Post postal code directory would have it - but here's how I think it went:

Agincourt M1S, M1T, M1V, M1W
Don Mills M3A, M3B, M3C
Downsview M3H, M3J, M3L, M3M, M3N
Islington M9A, M9B, M9C
Rexdale M9V, M9W
Scarborough M1B, M1H, M1M, M1N, M1P, M1R, M1X
West Hill M1C, M1E, M1G
Weston M9L, M9M, M9N, M9P, M9R
Willowdale M2H, M2K, M2L, M2M, M2N, M2P

All the others had "Toronto" addresses.