Eight letters written by Robert Stephenson, dated 4th June 1824 to 20th June 1826, to his parents in Newcastle upon Tyne, regarding his venture to Colombia. Each letter is holograph signed. Most of the letters are to his stepmother; all concern his venture to Colombia as engineer-in-chief to the Colombian Mining Association, 1824-1827. The first three letters, written before sailing, principally justify his decision to go; the five written from South America describe some of his difficulties at work, living conditions, animal and plant life etc. and express increasing longing to return to England.