Obituary from Journal of the Marine Biological Association vol 34, 1955; envelope of biographical material, including: Times obituary, Trinity College Memorial Service, handwritten memoir by Dr Anna Bidder; envelope of photographs of G.P.Bidder at various ages, also two of his mother Anna Bidder née McLean; letters from GPB to his wife (in small cardboard box); contents of small box file 14 marked "for memoir": two envelopes of miscellaneous letters and documents, including birth certificate; list of holiday dates, places and companions 1926 46 (originally with album of picture potcards, given to Map Room); pages from Atlas Antiquus, twelve maps of the ancient world, with sketches by school friend (?) L.J.Fish; catalogue of earlier family papers, and correspondence