Located in Chicago, Illinois, they offered a full range of trucks and some buses.

King-Zeitler white "K-Z" emblem. (source: Radiator Emblem Collection)
King-Zeitler white “K-Z” emblem. (source: Radiator Emblem Collection)
King-Zeitler red "K-Z" emblem. (source: Radiator Emblem Collection)
King-Zeitler red “K-Z” emblem. (source: Radiator Emblem Collection)