Sourced production or model lifecycle range used by the main catalog timeline.
BriscoeModel B 4-24
Smaller air-cooled four-cylinder series that replaced both 1916 models. Wheelbase evolved from 105 inches in 1917 to 104 inches in 1918–19 and 103 inches in 1920. The 1917–18 catalog included five-seat touring, four-seat roadster, two-seat runabout and Coachaire forms; the roadster became a two-seater in 1919. For 1920 Briscoe offered a six-seat tourer, two-seat runabout, five-seat sedan and two-seat coupe. The same chassis supported the named Rapidelivery, cataloged separately because Briscoe marketed it as a commercial model. Canadian-built equivalents share this family and specifications.
Dates with their meaning intact
This record contains useful sourced evidence, but it does not yet meet the reference-ready standard. Still needed: attributed imagery. Fields we cannot source stay empty rather than guessed.
Company output across 1917–1920 was 32,586 cars; sources do not isolate passenger B 4-24 output from Rapidelivery chassis.