In 1884, she began as a mechanical
drafter and with the exception of work with Daniel J. Miller, one of the first
cable railroad men, in whose office she had practice with working drawings and estimating costs for cable railroad in 1885 and 1886, her work was patent-office drawing. At the same, during the winter of 1885–86, Griswold taught
geometry and
mathematics in a private school in New York. Although obliged to give up active office work in 1905, on account of ill health, she continued, at her home, the "expert work", for which her knowledge and experience were in great demand. She kept her office in the St. Paul Building until 1908. She was also an occasional writer for other magazines. Her interests included psychology,
Theosophy, and
metaphysics. She began to study psychology while in the Normal College and kept it up thereafter. She regarded it as the most important factor in her life, and that it had a great influence on her work. In later years, Griswold took up the study of
Henri Bergson's philosophy with a group of friends. To furnish this group of students with textbooks, Griswold wrote a series of booklets showing the trend of the new philosophy of this former professor of philosophy in the College of France. she also wrote articles to show what it means to be "one with the Father" and "led by the Spirit". After these articles were written, she resolved to print them herself. She bought a small printing press and type and learned the art by herself. She printed, and bound four booklets, limiting the edition to the hundred copies numbered and autographed by herself. They were entitled,
A Study of Life. She included in these pamphlets the philosophy of Bergson and the psychology of
William James. ==Personal life==