PRYOR (Alfred Reginald). A Flora of Hertfordshire. With an introduction on the Geology, Climate, Botanical History, etc., of the County.1887

London: Gurney & Jackson, First edition, [8], lviii, 347-348, 588pp., proof copy, has extra title-page, and extra prelims and duplicated pp. 347/348 set differently, without the coloured map, 1 one double-page map, orig. green cloth, hinges shaken, signs of labels having been removed from spine, covers decorated in blind, spine gilt.