This fonds consists of seamen's wages account books, printed maps and notes. The seamen's wages account books are for the ship "Muskota", and provide Captain (J.E. Masters) and seamen's names, titles, wages, dates of engagement, and financial transactions. The books also provide tables for calculating seamen's wages. There are three maps which show the routes taken by ships under J.E. Masters command, including the "Berteaux".

Four loose pages from a memorandum book contain notes about the ship "Berteaux" and provide dates of departure and arrival from various ports. On the reverse side of the memorandum pages, there are notes of purchases and a list of worldwide contact addresses for Captain Masters. Most are shipping company addresses, including C.W. Berteaux, the firm that built and owned the "Muskota" and the "Berteaux".