Miller formed a partnership with Harry C. Baker in 1920 under the name Miller and Baker, Inc.
Designers and Builders of Amusement Parks, Miller Patented Under Friction and Under Friction Locking Device Coasters, Miller Dome Roof Carousel Buildings and Dome Roof Dance Pavilions, Old Mills, Mill Chutes, Fun Houses, Miller's Tandem Seat Serpentine Coasters, Mechanical Devices of every description, Equipment and Machinery for all Amusement Park Devices and Sales Agents for the Dodgem, the Whip, and Aero-Plane Swings.
Included in the catalogue is this partial list of coasters built during the past three seasons. (i.e., 1920, 1921, and 1922):