The Robinson Folding Bathtub needed no plumbing, was 'positively unleakable', and was poised to capitalize on the 70% of homes that allegedly lacked a bathroom. [The early 20th-century verbiage is a hoot; click the pic to read it.] The opportunities for financial gain promised by the manufacturer—'Hustlers, east, north, west, south: coining money'—sound depressingly familiar, albeit it in a different, contemporary context.