#mellongallery

National Gallery of Art. Construction of ventilators, Mellon Gallery of Art III ca. 1920-ca. 1950. Horydczak, Theodor, approximately 1890-1971 1 negative : safety ; 8 x 10 in. #MellonGallery #Horydczak #Theodor #MellonGalleryIII #Construction #DistrictofColumbia #Galleries&museums #UnitedStates #Ventilation #Washington(DC) #photographyhttps://www.loc.gov/item/2019678800/

National Gallery of Art. Construction of ventilators, Mellon Gallery of Art II ca. 1920-ca. 1950. Horydczak, Theodor, approximately 1890-1971 1 negative : safety ; 8 x 10 in. #MellonGallery #Horydczak #Theodor #Construction #DistrictofColumbia #Galleries&museums #UnitedStates #Ventilation #Washington(DC) #photographyhttps://www.loc.gov/item/2019678799/

National Gallery of Art. Construction of ventilators, Mellon Gallery of Art I ca. 1920-ca. 1950. Horydczak, Theodor, approximately 1890-1971 1 negative : safety ; 8 x 10 in. #MellonGallery #Horydczak #Theodor #Construction #DistrictofColumbia #Galleries&museums #UnitedStates #Ventilation #Washington(DC) #photographyhttps://www.loc.gov/item/2019678798/