His profile, https://www.wikitree.com/wiki/Arnold-11493, which needs sources.
At home, 1880:
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZFH-Y2J : 13 September 2017), Satterlee T Arnold in household of Satterlee Arnold, Troy, Rensselaer, New York, United States; citing enumeration district ED 132, sheet 105C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0920; FHL microfilm 1,254,920.
Him and his wife in Philadelphia, 1900?
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3WS-RST : accessed 2 August 2018), Satterer G Arnold, Philadelphia city Ward 22, Philadelphia, Pennsylvania, United States; citing enumeration district (ED) 483, sheet 16A, family 332, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,463.
In Paducah, Kentucky in 1918 with wife Annie Richardson Arnold:
"United States World War I Draft Registration Cards, 1917-1918," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K35R-H4R : 13 March 2018), Satterlee Tracy Arnold, 1917-1918; citing McCracken County, Kentucky, United States, NARA microfilm publication M1509 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,653,651.
They lived in Cleveland in 1910:
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLDR-42J : accessed 2 August 2018), Satterlee T Arnold, Cleveland Ward 14, Cuyahoga, Ohio, United States; citing enumeration district (ED) ED 217, sheet 14B, family 385, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1170; FHL microfilm 1,375,183.
And New Jersey in 1905:
"New Jersey State Census, 1905," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KMWX-H54 : 13 March 2018), Satterlee T Arnold, , Essex, New Jersey, United States; citing p. 35, line 95, Department of State, Trenton; FHL microfilm 1,688,595.
Marriage to Anna R Child, 1899:
"New Jersey, Marriages, 1670-1980," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q29L-9FH6 : 21 September 2017), Satterlee T Arnold and Anna R Child, 27 Jul 1899; citing Woodbury, Gloucester, New Jersey, United States, Division of Archives and Record Management, New Jersey Department of State, Trenton.; FHL microfilm 589,820.
Are you sure he lived until 1950? He's not in the Social Security Death Index.
Hope that's what you're looking for.