Barrett, J. 1. (1899). The half year of war with Aguinaldo (A statement of the origin of the insurrection in February and a summing up of the campaign to August 21). [publisher not identified].

Barrett, John 1866. The Half Year of War with Aguinaldo (A Statement of the Origin of the Insurrection in February and a Summing Up of the Campaign to August 21). New York: [publisher not identified], 1899.

Barrett, John 1866. The Half Year of War with Aguinaldo (A Statement of the Origin of the Insurrection in February and a Summing Up of the Campaign to August 21). [publisher not identified], 1899.