1.  Marriage Record:

2.  1920 Census Every-Name-Index/Images (online at Ancestry.com):  I can't find Floyd, but his parents are living in Oregon City, Clackamus Co., OR.  Loyal E. JOHNSON (æ 3, b. SD) is living in Aberdeen, Brown Co., SD (p. 94A), with her parents, William W. JOHNSON (æ 42, b. IA) and Mabel C. (æ 36, b. TN), plus siblings.

3a.  1930 Census Every-Name-Index/Images (online at Ancestry.com, Image #8 of 26):  Vancouver Barracks, Clark Co., WA, Roll 2485, p. 252B, SN 4B, ED 6-53, SD 6, enumerated 10 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).
2	4	5	6	10	11	12	13	14	15	16	17	18	19	20	24	25	26	27	28	30	31
141	84	Carrico Floyd	Head	N	M	W	30	M	22	N	Y	OR	OR	OR	Y	Soldier	USA Co. 9	W	Y	Y	WW

One of hundreds of soldiers (all labeled "Head").  Floyd indicates he is married (at the age of 22), but Loyal is still living with her parents (see next Source), so apparently Loyal was not his first wife.

3b.  1930 Census Every-Name-Index/Images (online at Ancestry.com):  Loyal E. JOHNSON (æ 14, b. SD) is living in Selah, Central Pct., Yakima Co., WA (p.  12B), with her parents, William H. JOHNSON (æ 51, b. IA) and Mabel C. (æ 46, b. TN), plus siblings.

4.  SSDI:  Social Security Death Index (online at RootsWeb.com):

Name	Birth	Death	Last Residence	SSN	Issued	Post-em
Floyd CARRICO	27 Feb 1900	Feb 1978	83338 (Jerome, Jerome, ID)	539-0702146	WA	Yes

5.  World War I Selective Service System Draft Registration Cards, 1917-18.  Microfilm Series M1509 (4277 rolls), National Archives and Records Administration, Washington, DC (card images and index online at Ancestry.com):  Floyd not found.  He may have simply enlisted, instead of registering for the draft.

6.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).