The U.S. Patent Office.
Publisher: Hempler, H.H.
Subjects: Washington (D.C.), Government facilities, Ditches
Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library]
Subjects: Washington (D.C.), Government facilities, Ditches
Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library]
Reclaiming swamp land. Digging ditch with tractor, and laying drain tile, Wisconsin.
Photographer: Keystone View Company
Subjects: Wisconsin, Tractors, Reclamation of land, Ditches
Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library]
Subjects: Wisconsin, Tractors, Reclamation of land, Ditches
Collection: NYPL Digital Collections: Robert N. Dennis [From The New York Public Library]
