Try
sport cards conventions. Sometimes the vendors have these things or have them back at their shops. It's a place to start. The fad is not as popular as it once was so the conventions are not as visibly advertised. They used to be held at the Civic Centre, Nepean Sportsplex, Jim Durell arena. Watch for them when the 'Old Timers Hockey' start making their tours.
Or if yur quick and know how the Hard Rock Cafe's have their memorabilia mounted on the walls...well - I'll let you figure it out LOL !