Erskine prospered in the cattle industry and from his Capote Ranch on the Guadalupe River near Seguin in 1854, drove a herd of cattle to California. On the drive he had the protection of an armed escort under the command of James J. Callahan. This is a detailed diary of his experiences on this drive. He became involved with several mining ventures, which were apparently failures. His letters home tell of his five year mining venture in 1859 before he returned to Capote Ranch and resumed the raising of cattle.