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Armstrong Association of Philadelphia: Annual report of the Armstrong Association of Philadelphia. (Armstrong Association of Philadelphia., between 1000 and 1999) (page images at HathiTrust) Armstrong Association of Philadelphia: Annual report of the Armstrong Association of Philadelphia for the fiscal year ending ... (Armstrong Association of Philadelphia, 1909) (page images at HathiTrust) Armstrong Association of Philadelphia: A comparative study of the occupations and wages of the children of working age in Potter and Durham schools, Philadelphia. (Printed by pupils at the Philadelphia trades school], 1913), also by Philadelphia (Pa.) Board of Public Education (page images at HathiTrust) Armstrong Association of Philadelphia: The negro in business in Philadelphia ([Philadelphia], 1917) (page images at HathiTrust) Armstrong association of Philadelphia: The negro in business in Philadelphia. ([Philadelphia, 1917) (page images at HathiTrust) Armstrong Association of Philadelphia: Story of good bird and bad cat (in the 1910s), also by Isabella M. Andrews and Charles Simpson Butcher (page images at HathiTrust) Armstrong Association of Philadelphia: A study of living conditions among colored people in towns in the outer part of Philadelphia and in other suburbs both in Pennsylvania and New Jersey. ([Philadelphia, 1915) (page images at HathiTrust)