Daniel Halladay's Improvement in Wind-Mills - NARA - 84785477.jpg
en
Daniel Halladay's Improvement in Wind Mills NARA 84785477, Windmill plans, US National Archives series: Re-Isssued (RE) Patent Drawings, Images from the National Archives and Records Administration, US National Archives location: other, Daniel Halladay's Improvement in Wind-Mills
commons
ja
ダニエル・ハラデイの風車改良 NARA 84785477、風車計画、米国国立公文書館シリーズ:再発行(RE)特許図面、米国国立公文書館管理局からの画像、位置:他の、ダニエル・ハラデイの風車改良
commons_translated
improvable improvement