1.  Timothy Hopkins.  1932.  John Hopkins of Cambridge, Massachusetts, 1634, and Some of His Descendants. Stanford Univ. Press, Stanford, CA (available as a facsimile reprint from Higginson Books and online at GenealogyLibrary.com).  On p. 519, as children of Samuel Holt HOPKINS and Emma FAY:

IONE JANE,9 b. 28 April 1878, at Wheelers Grove, Iowa; m. at Macedonia, Iowa, 30 June 1897, Eugene Clarence Bowersox, b. 1 Mar 1870, son of Jacob Shuey and Jane (Hutson) Bowersox.    He graduated from the University of Iowa in 1896 and by profession is an educator.  They reside at Wenatchee, Washington, and are Methodists and Republicans.       Children surname Bowersox:   I.  LAVERNE KENNETH, b. 26 July 1899, at Chelan, Washington; m. 11 October 1924, Ruth Louisa Jones.  In 1930 he was head of the History Department of Eureka College, Eureka, Illnois.  II.  KARL CHESTER, b. 21 June 1908, at Wenatchee.  A student in the State University of Washington. III.  GLENN HOPKINS, b. 26 April 1912.  A high-school student.