The Theodore Morris papers document the education and professional work of 1906 Purdue graduate Theodore Morris. The papers include his mechanical engineering assignments, engineering and metallurgy notebooks, and documentation related to his 1934 patent for an "Aggregate Treating Apparatus" for use in "drying sand, stone, and other mineral aggregate for use with asphaltic cement and other bituminous materials for paving purposes."

Includes fifty assignments related to Morris's mechanical engineering coursework, a metallurgy notebook, and a "mechanical engineer's pocket book" containing reference information and calculation charts.