For the three Mrs. Judsons, see Knowles, Life of Ann Hasseltine Judson (1829); Emily C. Judson, Life of Sarah Hall Boardman Judson (1849); Asahel C. Kendrick, Life and Letters of Emily Chubbuck Judson (1861).
In 1787 a company of Boston merchants sent two vessels, the " Columbia " and the " Washington " under John Kendrick and Robert Gray (1755-1806) to investigate the possibility of establishing trading posts.
M`Kendrick, of Glasgow, he investigated the physiological action of light, and examined the changes which take place in the electrical condition of the retina under its influence.