Solomon was born in 1895. He was the son of Joseph Amster and Rose Dick. He passed away in 1961.
Sources
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M5QB-52T : accessed 19 September 2020), Sol Amster in household of Joseph Amster, Manhattan Ward 10, New York, New York, United States; citing enumeration district (ED) ED 218, sheet 12A, family 184, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1010; FHL microfilm 1,375,023.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJ5M-31K : accessed 19 September 2020), Solomon Amster in household of Joseph Amster, Brooklyn Assembly District 4, Kings, New York, United States; citing ED 200, sheet 16B, line 55, family 353, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1149; FHL microfilm 1,821,149.
"New York, New York City Marriage Records, 1829-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2C2-B7Q1 : 29 November 2018), Sol Amster and Cornelia Schwartz, 24 Dec 1922; citing Marriage, Manhattan, New York City, New York, United States, New York City Municipal Archives, New York; FHL microfilm 1,653,542.