Since there are not a lot of Québec city forumers here, I'll take the lead on Québec's early skyscrapers (40 m. and more only)
LE CHÂTEAU FRONTENAC (1892-1924)
This building was built in 4 steps (or wings / ailes).
See it on Street View here
Château Frontenac by
Ricardo Beck, sur Flickr
1. Aile Riverview (1892-1893)
Height: 40 m.
Floors: 8
Architect(s): Bruce Price
2. Aile Citadelle (1899)
Height: 46 m.
Floors: 10
Architect(s): Bruce Price
3. Aile Mont-Carmel (1908-1909)
Height: 57 m.
Floors: 10
Architect(s): W.S. Painter
4. Aile Saint-Louis and Central Tower (1920-1924)
Height: 79,9 m.
Floors: 17
Architect(s): the brothers Edward and William Sutherland Maxwell
ÉDIFICE DOMINION (1912)
Height: 41 m.
Floors: 9
Architect(s): René-P. Lemay
Structure: steel
See it on Street View here
By Davidivivid on Flickr
LE CHÂTEAU SAINT-LOUIS (1925)
Height: 43 m.
Floors: 11
Architect(s): Harold Fetherstonaugh
Structure: steel
See it on Street View here
(Ville de Québec)
USINE DAISHOWA (1927)
Height: 65 m.
Floors: 11
Architect(s): Geo. F. Hardy
See it on Street View here
Dame Daishowa by
La Marino, sur Flickr
LE CLARIDGE (1928)
Height: 40 m.
Floors: 10
Architect(s): Robitaille et Desmeules, architectes
Structure: steel
See it on Street View here
Le Claridge by
Gerard Donnelly, sur Flickr
ÉDIFICE PRICE (1929-1930)
Height: 82 m.
Floors: 18
Architect(s): Ross and Macdonald
Structure: steel
See it on Street View here
Strolling Quebec by
__ LorenzMao __, sur Flickr
Édifice Price by
camerio, sur Flickr
HÔTEL-DIEU DE QUÉBEC, PAVILLON RICHELIEU (1930-1931)
Height: 41 m.
Floors: 9
Architect(s): I didn't find it
See it on Street View here
Hôtel-Dieu de Québec by
Pierre-Olivier Fortin, sur Flickr
ÉDIFICE "D" (1931)
Height: 44 m.
Floors: 8
Architect(s): Auger, Beaulé et Morissette, architectes
See it on Street View here
Répertoire du patrimoine culturel du Québec
ÉDIFICE ANDRÉ-LAURENDEAU (1934-1936)
Height: 59 m.
Floors: 11
Architect(s): Lacroix, Drouin et Bergeron, architectes
See it on Street View here
Répertoire du patrimoine culturel du Québec