1.  Marriage Record:

2.  1900 Census Every-Name-Index/Images (online at Ancestry.com):

3.  1910 Census Every-Name-Index/Images (online at Ancestry.com):  can't find Louis or Florence, and I really looked.

4.  1920 Census Every-Name-Index/Images (online at Ancestry.com, Image #4 of 24):  1133 Fairview Ave., Seattle (Pct. 111), King Co., WA, Roll T625_1927, p. 202B, SN 2B, SD 1, ED 176, enumerated 3 Jan 1920, official enumeration date 1 Jan 1920 (extracted by Diana Gale Matthiesen):

1920:  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

9

10

11

12

17

18

19

21

23

25

26

27

28

*

1133

54

59

Rose Louie

Head

H

M

W

28

M

Y

Y

WA

MT

ND

Y

Boiler Maker

Ship yards

W

____ Florence

Wife

F

W

29

M

Y

Y

WA

NY

OH

Y

None

____ Henry

Son

M

W

3/12

S

WA

WA

WA

Y

None

*Fairview Ave

There are only two Henry ROSEs indexed as being in Washington state or born in Washington state (there are none in/of Oregon) who are close to being the age of Florence's son, and this is the only one of the two who has a mother, Florence.  So, despite the discrepancies in the birthplaces, this almost has to be the same Florence who later married Harry STRAUB (the alternative being that she was missed, entirely, in the 1920 census).

5.  1930 Census Index/Images (online at Ancestry.com, Image #12 of 14):  South Street - West End, Philomath City, Philomath Pct., Benton Co., OR, Roll 1939, p. 154B, SN 6B, ED 2-27, SD 6, enumerated 17 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

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

24

25

26

27

28

30

31

*

149

152

Straub Harry E

Head

E

500

R

N

M

W

34

M

21

N

Y

KS

US

US

Y

Truck Driver

Fuel Dealer

W

Y

Y

WW

______ Florence

Wife

F

W

35

M

16

N

Y

MN

MN

MN

Y

none

______ Vera M

Dau

F

W

11/12

S

N

OR

KS

MN

none

Rose Henry

StepSon

M

W

10

S

Y

N

WA

MA

MN

Y

none

____ Vernon

StepSon

M

W

7

S

Y

OR

MA

MN

Y

none

____ Iva M

StepDau

F

W

3 8/12

S

N

OR

MA

MN

none

*South Street - West End

Florence appears to be fibbing about her age.  Column 15 is "Age at first marriage."  Harry cannot have married at 21 because, in the 1920 census, he was age 23, "single," and still living with his parents.  Given the age of her eldest child, it seems unlikely (though not impossible) that Florence was only 16 at first marriage, but that may mean Harry is her third husband, not her second.

6.  Washington State Birth Index, 1907-1919 (online at Ancestry.com):

Name:	Unnamed Rose
Birth Date:	20 Oct 1919
Location:	Seattle
Sex:	M
Race:	W
Parent:	Louis Rose
Parent:	Florence Emery

7.  CADI:  California Death Index, 1940-1997 (online at RootsWeb.com and Ancestry.com):

Last Name	First Name	Middle	Birth Date	Mother Maiden	Father Last	Sex	Birth Place	Death Place (County)	Residence	Death Date	SSN	Age	Post-em(s) Found	Post-em(s) Placed
-	-	-	-	-	-	-	-	-	-	-	-	-	No	No
-	-	-	-	-	-	-	-	-	-	-	-	-	No	No
ROSE	Henry	Louis	10/20/1919	EMERY	ROSE	M	Washington	Butte	-	07/21/1941	-	21	No	No

8.  Messages posted to the Rose Family Genealogy Forum (online at GenForum.com).

9.  Messages posted to the ROSE Surname Board (online at RootsWeb.com/Ancestry.com).