1.  LDS.  Family Search: Internet Genealogy Service: Pedigree Resource File (index to CDs, online at FamilySearch.org).

Charles Hart CARD Birth: 20 Jul 1881 Father: Frank S. CARD (20 Oct 1857 - 13 Feb 1913) Mother: Orpha MONTGOMERY (16 Jul 1862 - 19 Aug 1939) Spouse: Myra STROUP Marriage: 26 Dec 1906

2.  1910 Census Index/Images (online at Genealogy.com; Image #40 of 90):  Township 6 (S30.T20S.R15E), Fresno Co., CA, Roll 76 (Book 2), p. 143B, SN 1B, SD 6, ED 59, enumerated 15/16 Apr 1910, official enumeration date 15 Apr 1910 (extracted by Diana Gale Matthiesen):

1910:  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	10	11	12	17	18	19	20	21	22	23	24	25	26	27	28
16	16	Card Charles	Head	M	W	28	M1	3			PA	Eng	Foreman	Oil Co	W	N	4	Y	Y	Y	O	F	H
		____ Myra	Wife	F	W	23	M1	3	0	0	PA	Eng	None			N	4	Y	Y

Yes, the parents' birthplaces were left blank, as they were for many of the householders.  Charles's parents, Frank S. & Orpha CARD, are three households away (p. 143A, 13/13; shows Frank and Orpha born in PA; had two children).

3.  1920 Census Index/Images (online at Ancestry.com):  can't find, apparently out of the country.

4.  1930 Census Index/Images (online at Ancestry.com, Image #6-7 of 36):  644 18th Street, Merced City, Merced Co., CA, p. 19B-20A, SN 3B-4A, ED 24-2, SD 11, enumerated 4/7 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

*

644

63

65

Card Charles B

Head

M

W

48

M

25

N

Y

PA

PA

PA

Y

none

N

____ Myra

Wife

R

250

R

F

W

43

M

19

N

Y

PA

US

NY

Y

Boarding House

Proprietor

E

Y

____ Helen

Dau

F

W

16

S

Y

Y

Trinidad Island

PA

PA

Y

None

____ Mildred

Dau

F

W

13

S

Y

Y

CA

PA

PA

Y

None

[plus 30 boarders]

*18 Street