Nancy Roos, born February 28, 1905 as Nancy Krotoschin, was married to Martin Roos. February 28 is the 59th day of the year in the Gregorian calendar. ... 1905 was a common year starting on Sunday (see link for calendar). ...

She won the U.S. Women's Chess Championship in 1955 with Gisela Kahn Gresser. Gisela Kahn Gresser (February 8, 1906 - December 4, 2000) was one of the first two female chess players in the United States to gain the title of master in 1950 when FIDE created official titles. ...

She died in L. A., California on April 6, 1957. April 6 is the 96th day of the year in the Gregorian calendar (97th in leap years). ... 1957 was a common year starting on Tuesday of the Gregorian calendar. ...