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1door Calvert AssociatesLocation: PAHRC Library, Philadelphia Archdiocesan Historical Research Center (PAHRC)
Gepubliceerd in 1928
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2door Calvert AssociatesLocation: PAHRC Library, Philadelphia Archdiocesan Historical Research Center (PAHRC)
Gepubliceerd in 1924
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3door The Calvert Associates; Williams, Michael, 1878-1950Location: PAHRC Library, Philadelphia Archdiocesan Historical Research Center (PAHRC)
Gepubliceerd in c. 1925
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4Gepubliceerd in 1928“...Calvert Associates...”
Location: Dinand Library, College of the Holy Cross
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