1.  Marriage Record:

2.  1920 Census Index/Images (online at Ancestry.com):  can't find.

3.  1930 Census Index/Images (online at Ancestry.com, Image #32 of 35):  Hobart Mills Town, Meadow Lake Twp., Nevada Co., CA, p. 24B, SN 16B, ED 29-17, SD 4, enumerated 24 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).
3	4	5	6	7	8	10	11	12	13	14	15	16	17	18	19	20	24	25	26	27	28	30
?	?	Thompson William A	Head	R	7.50	N	M	W	47	M	36	N	Y	CA	MO	IL	Y	Butcher	Mercantile???	W	Y	N
		________ Nancy C	Wife				F	W	54	M	20	N	Y	CA	Scot	MO	Y	None

4.  CADI:  California Death Index, 1940-1997 (online at RootsWeb.com and Ancestry.com; missing columns contained no data):

Last Name

First Name

Middle

Birth Date

Mother Maiden

Father Last

Sex

Birth Place

Death Place (County)

Death Date

SSN

Age

Post- em

THOMPSON

William

Arthur

04/01/1883

PADGETT

THOMPSON

M

CA

San Francisco (38)

03/01/1954

549-16-5175

70 yrs

Yes

5.  SSDI:  Social Security Death Index (online at RootsWeb.com; missing columns contained no data):  not found.

6.  Archives of the TThompson mailing list, a post by Phyllis Houlding (online at TThompson ListInfo):

Wm. Arthur, b. 16 Apr 1883, m. Mrs Nancy Armsdon Edwards on 1 Apr 1919 in Sacramento CA., Arthur d., 1 Mar 1954 in S.F. CA, buried in Dixon, Nancy died 11 Oct 1936 buried in Roseville.