Clark's missionary activities produced the Sapporo Independent Christian Church in 1882, founded by students of SAC. It was one of the first cells of Christianity in Japan after the Meiji Restoration. Eventually, ten of the signers of Clark's "Covenant in the Believers of Jesus," raised funds to build the William S. Clark Memorial Church in Sapporo in 1922. The church was demolished in 1962, but rebuilt in another location and still houses the original "Covenant" as well as several Bibles Clark brought to Sapporo.