The youngest daughter of Dr. William Thomas and Laura Belle Wythe,
Margaret Wilhelmina was born on June 14, 1880 and died at the age of 78 on June 13, 1958.
She was assistant curator of birds in the Museum of Vertebrate Zoology in 1912 as Joseph
Grinnell's assistant, earning $0.35 per hour. She received her Master's degree in 1923,
and by 1925 she had become so valuable that she was promoted to Assistant Curator of Birds.
One of the more famous books published by Grinnell and Margaret W. Wythe was in 1927 "Directory
of the Bird-Life of the San Francisco Bay Region", which is still widely used. Most of the base
maps and range maps used in Grinnell's 1944 publication, "Distribution of the Birds of California,"
were prepared by Margaret.
(some information provided by MVZ in 2006)