I found this in the Social Security Index:

Name:

Agnes Marquis

State of Issue:

Iowa

Date of Birth:

Thursday June 12, 1902

Date of Death:

March 1986

Est. Age at Death:

83 years, 9 months

Last known residence:

City:

Keota; Clear Creek; Talleyrand

County:

Keokuk

State:

Iowa

ZIP Code:

52248