Eight Photographs (?Woodburytypes) of Steam Cranes, Hoisting Engines, and their Buckets, c.1880

In MS Gunther 80, scrapbook of T. H. T. Hopkins relating to mechanics and turning. Eight photographs, either woodburytypes or purple-brown toned albumen prints, mounted on the album pages. They show: a floating crane or dredger; a crane or hoisting engine; various types of buckets and mechanical gathering or excavating attachments for such hoisting engines (4 photographs); and steam cranes or hoisting engines on rails actually in use (2). One of the latter machines bears a maker's name: 'Pr... Brothers | Engineers'. No accompanying description. This group of photographs has the appearance of illustrations from, or intended for, a manufacturer's catalogue; though they are not cuttings from a catalogue, they are real photographs on thin photographic paper (as used for woodburytypes and albumen prints) with clean blank backs (where visible).