The Alvis Gold Portfolio contains contemporary reports featuring road tests, introductory articles, special coachwork, technical and performance data, with a small historical section. During the 1920s and 1930s, the Alvis company offered a broad model range in which engineering innovation was to the forefront. Models covered are: (pre-war) Alvis 12-50 • Straight-eight racer • Alvis 14-75 • Alvista saloon • Alvis Atlantic saloon • Front-Drive Alvis • Alvis Silver Eagle • Alvis 12-60 • Alvis Speed Twenty • Alvis Mayfair DHC • Firefly saloon • Crested Eagle • Firefly Twelve • Alvis 16 • Alvis Silver Eagle 16 • Alvis 3.5-litre • Alvis Speed Twenty-five • Alvis Twenty-five Limousine • Alvis 4.3-litre saloon • Alvis Crested Eagle 25 • Alvis 12/70 • Alvis Silver Crest • Alvis 14 • (post-war) Alvis 14 Sports • Alvis 3.0-litre saloon • Alvis 3.0-litre DHC • Alvis TC 21/100 • Alvis Graber saloon • Alvis 3-litre Park Ward • Alvis TD21 • Alvis TD21 Auto and Alvis TE21 Series III and IV.