SIR: I am searching for well-known mathematician Gertrud Walton (Keller), born Jan. 9. 1930 in Aachen, Germany, who last resided at 18 St. Swithun St. in Winchester for many years.

She would be 92 years of age now.

My mom (her sister who lives in Cologne, Germany) has been looking for her as her latest letters to Gertrud were returned as undeliverable.

If anyone has any information on her whereabouts or what became of her please email Claudia Ainsworth at

Claudia Ainsworth

Sandy Hook, CT/ USA