The letters concern the business relations between Blackwood and Murray and their associates. Several of the letters include details of business accounts. Also included are miscellaneous business papers.

The letters are arranged chronologically.

1812

January: folios 1-5;

February: folios 6-17;

March: folios 18-19;

April: folios 20-24;

May: folios 25-33;

June: folios 34-36;

July: folios 37-41;

August: folios 42-45;

October: folios 46-57;

December: folio 58.

Uncertain date, ?1812: folio 59.