""Knights of the Labarum: Being Studies in the Lives of Judson, Duff, Mackenzie and Mackay"" is a book written by Harlan Page Beach and published in 1896. The book is a collection of biographical sketches of four Christian missionaries who dedicated their lives to spreading the Gospel in Asia - Adoniram Judson, Alexander Duff, William Mackenzie, and Alexander Mackay. The book provides a detailed account of the lives of these missionaries, their struggles,...