1.  Marriage Record:

2.  1930 Census Index/Images (online at Ancestry.com, Image #11 of 38):  Canterbury Court Apts., 1119 Washington Boulevard, Oak Park Village, Oak Park Twp., Cook Co., IL, Roll 505 (Book 1), p. 87A, SN 6A, ED 16-2268, SD 4, enumerated 8 Apr 1930, official enumeration date 1 Apr 1930 (extracted by Diana Gale Matthiesen):¤•

1930:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	4	5	6	7	8	9	11	12	13	14	15	16	17	18	19	20	24	25	26	27	28	30
*	1119	44	157	Hopkins Harvey C	Head	R	85	R	M	W	26	M	24	N	Y	MI	MI	VT	Y	Chemist	Cans	W	Y	N
				_______ Ruth	Wife				F	W	27	M	24	N	Y	IL	IL	IL	Y	None
				_______ Harvey C Jr	Son				M	W	1 6/12	S		N		IL	MI	IL		None
*Washington Boulevard

3.  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 by subscription at GenealogyLibrary.com):

p. 779

874. HARVEY CHILDS10 (B. SMITH,9 LOREN,8 PHILANDER,7 NEHEMIAH,6 NEHEMIAH,5 EBENEZER,4 EBENEZER,3 STEPHEN,2 JOHN1), b. at Menominee, Michigan, 19 April 1903; m. at Quincy, Illinois, 23 Jun 1926, Rugh Michelman, b. there 14 December 1901.  He is Assistant Superintendent of Lithographing in the Chicago area of the American Can Company and a Congregationalist. Child:      HARVEY CHILDS, JR.,11 b. 15 October 1928, at Quincy.