WWI Draft Registration - Kasper Joshua Lathrop, of Rt. # Turner, Oregon, age 45, b. Sept. 8, 1873, occupation farming, nearest relative Martha C. Lathrop, height - 5'7"; Build - medium; Eues - brown; hair - brown.

Name of father Horace Lathrop

Maiden name of mother Elsbeth Agglea

1880 IA CENSUS - Caper ([Kasper] Lathrop, age 6, b. Iowa, is enumerated with parents H. W., age 32, occupation farmer, b. New Hampshire, and Elspeth, age 28, b. Switzerland, along with Frank W., age 8, b. Iowa, Christian, age 3, b. Iowa and Katie, age 5 months, b. Iowa.

1st MARRIAGE: to Maud Harrison, 20 Oct 1895 in Pipestone Co., Minnesota (widowed by 1900) 

1900 S.D. CENSUS - Casper [Kasper] Lathrop, age 26, widowed, occupation day laborer, b. Sep 1873 in Iowa, and his son Amar, age 2, b. Apr 1898 in Iowa, are living with Kasper's widowed mother, Elizabeth (Elspeth), age 48, mother of 6 children, occupation nurse, b. Jul 1851 in Switzerland, and Christian Lathrop, age 23, single, occupation day laborer, b. Jan 1877 in Iowa, and Peter Lathrop, age 14, at school, b. Jan 1886 in Iowa. 

2nd MARRIAGE - Kasper J. Lathrop and Martha C. Reidesel were married 9 Oct 1901 in Silver Township, Cherokee, Iowa.

1910 ND CENSUS (Wells, Co., Cathay School, ED 0208, sheet 4A) - Kasper Lathrop, age  36, occupation farmer (home farm), b. Iowa, is enumerated with his (2nd) wife of 8 years, Martha, age 27, b. Iowa, along with Amer, age 12, b. Minnesota, and Opal, age 6, b. North Dakota.

OSBH DC (Lane County 1942) #105 - Kasper Josh Lathrop, male, married (Martha Lathrop, age 60), occupation janitor at Trent school, b. 8 Sep 1873 in New Hampshire, d. 4 Mar 1942 in Trent, Oregon at the age of 68 y's 5 m's 26 d's, name of father Horace Lathrop (b. Canon [sic], New Hampshire), maiden name of mother Elsbeth Agglea (b. Switzerland), interment 7 Mar, undertaker P. J. Bartholomew of Springfield, Oregon, informant Martha Lathrop of Dexter, Oregon.

Casper [Kasper] Lathrop died at Springfield Wednesday. Survivors are his widow; two sons, Amer of Portland and Lloyd of Eugene; two daughters, Mrs. Opal Russell of California and Mrs. Evelyn Casey, Trent. Services will be held Saturday, March 7, at 2 o'clock, from the Rose Lawn funeral home. Concluding services at City View [sic - IOOF] cemetery. 
Oregon Statesman 6 Mar 1942 5:2

Kasper J. 
Lathrop
1873 - 1942

LR

LD 
OSBH DC (Lane County 1942) #105
S&H pg 3 
Saucy Survey & Photographs

1880 IA CENSUS (Cherokee Co., Silver Two, pg 8D)

Minnesota Official Marriage System (https://www.moms.mn.gov/Search?S=1)

1900 S.D. CENSUS (Minnehaha, Sioux Falls, ED 0260, sheet 1B)

Iowa Marriages, 1758-1996 (Ancestry.com)

1910 ND CENSUS (Wells, Co., Cathay School, ED 0208, sheet 4A) 

World War I Draft Registration Cards, 1917-1918

OS 6 Mar 1942 5:2