""A Memorial of Thomas Thwing: Thirty Years City Missionary in Boston"" is a book written by Thomas Thwing himself in 1868. The book is a memoir of his thirty years of service as a city missionary in Boston. It is a detailed account of his experiences, challenges, and triumphs as he worked tirelessly to improve the lives of the people in the city. The book provides a glimpse into the social and economic conditions of Boston during the mid-19th century...