1870s photos proved a horse does have its four feet off the ground at once, satisfying this railroad magnate's curiosity
It's 
one of those expressions, like the equally gorgeous crash blossom,... [DOC] [TLE] American camp culture: a history of recreational vehicle ... [PAR] The earliest tourists in America traveled by foot, horses, or ... 1890 to 1960, when 
leisure camping and recreational vehicles were in their formative years.