Production chronology1904–1909
Sourced production or model lifecycle range used by the main catalog timeline.
curated ↗6 years
← Speed-Well (Yocum)
Speed-Well (Yocum) / Model record
Speed-Well (Yocum)Runabout Range
Production1904–1909
Recorded originUnited States
ClassSmall open runabout
Complete source-defined passenger-car output of A. H. Yocum & Company. Surviving histories identify small Speed-Well runabouts but do not preserve reliable individual model names or specifications, so they are grouped instead of assigned invented types. Announced 10–40 hp two-, three- and four-cylinder sleeve-valve cars for a proposed Oakland factory are excluded because the expansion failed before documented production.
Chronology ledger
Dates with their meaning intact
Record depth — Documented
How this is measured → 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.