Background
Source: Wikipedia
Isabel Egenton Ostrander (1883–1924) was an American mystery writer of the early twentieth century who used her own name and the pseudonyms Robert Orr Chipperfield, David Fox, and Douglas Grant. Christopher B. Booth is sometimes (falsely) credited as a pseudonym of hers. She was born in New York City to Thomas E Ostrander and Harriet Elizabeth Bradbrook.
