Sy Foster was a dedicated right-wing Christian. He was married to Florence June McNeil Foster and had a daughter, Adele Foster Pruitt, and a son, Don Foster, who was born in 1918. He received his PhD in architecture and lived in Illinois until he retired in the 1930s. He then moved to Hayward, California and began his interest in right-wing social and political issues.

Sy Foster was religious and started a new church called the First Comic Church based on his book "Why Another Church?" He was anti-Semitic and believed Judaism correlated to the dangers of Communism, which he was also against. Sy Foster was invested in politics as well. He ran for California Assembly in Hayward and lost. He often wrote letters to Federal and State officials from the President of the United States to Senators and Representatives to Governors and created multiple politically oriented organizations titled "First National _____."

One of his primary areas of concern was the goblization of the U.S. government and the flouridation of U.S. water sources, which he fought against on multiple fronts. He was interested in genealogy and purity of race and was very concerned and cautious on the subject of immigrants and immigration.

He was in an auto accident in 1956 and was hospitalized for a while, slowing his work for a short time. He was publisher and editor, and possibly owner, of the South Hayward News, a weekly sheet newspaper from 1961 - 1963. He died before June of 1963.