These self-guided walking tours include reams of historical information into some of Calgary's oldest and most interesting neighbourhoods. Brochures can be downloaded from the City of Calgary website (see website link)
Each walk is different, but all are equally interesting. The brochures include maps, photos and historical notes. The walks through historic and eclectic nglewood, Stephen Avenue and Downtown are good places to start
If you’re feeling brave try the tour of Union Cemetery.