Workers on a Chloro boat, which was used for disinfecting large outdoor swimming areas. This photo was likely taken in the Washington, D.C., area. Photo from the National Photo Company collection, 1921. View full size.
  BUY PRINT    Workers on a Chloro boat, which was used for disinfecting large outdoor swimming areas. This photo was likely taken in the Washington, D.C., area. Photo from the National Photo Company collection, 1921. | Click image for Comments. | Home | Browse All Photos