Oldroyd produced several papers, and is known for her major works: Marine Shells of Puget Sound and Vicinity (1924) and The Marine Shells of the West Coast of North America, a four-volume series published between 1924 and 1927.
Oldroyd producerade flera rapporter och är känd för sina stora verk: Marine Shells of Puget Sound and Vicinity (1924) och The Marine Shells av West Coast of North America, en serie med fyra volymer publicerad 1924-1927.