A log-book of the ship British Monarch, kept by the commander, Thomas Bowen Rees, containing an account of her voyage from Liverpool to Calcutta, June-October 1865 (ff. 1 verso-23 verso), and from Calcutta to London, December 1865 - April 1866 (inverted text ff. 27-54 verso). Also included is a draft letter, ca. 1866, from Thomas Bowen Rees to 'Mrs Rowlands', ?'Yet y Cwrt', near Newport, co. Pembroke (inverted text f. 26 recto-verso); and notes in Welsh in praise of the Sunday School (inverted text ff. 24-5 verso).