Set of "Travel and Exploration" themed literary / antiquarian catalogues from Sotheran's of Sackville Street.  The four more recent ones ones are A4-sized and with colour photographs of most lots. The smaller A5 one has fewer photographs.

Full list:

Travel and Exploration Summer 2005 (A5)
Travel and Exploration Autumn 2006 (A4)
Travel and Exploration with sections on Abyssinia and Iceland 2007 (A4)
Travel and Exploration 2013 (A4)
- Far & Wide: Travel and Exploration 2014 (A4)