—— (92) The genus Sphenophyllum. Nature, vol. XLVII. p. 11, 1892.
—— (96) Reminiscences of a Yorkshire Naturalist (edited by Mrs Crawford Williamson). London, 1896.
Williamson, W. C. and Scott, D. H. (94) Further observations on the organisation of the fossil plants of the Coal-Measures. Pt. I. Calamities, Calamostachys and Sphenophyllum. Phil. Trans. vol. CLXXXV. p. 863, 1894.
—— (95) Ibid. Pt. II. The roots of Calamites. Phil. Trans. vol. CLXXXVI. p. 683, 1895.
—— (96) Ibid. Pt. III. Lyginodendron and Heterangium. Phil. Trans. vol. CLXXXVI. p. 703, 1896.
Wilson, J. S. G. (87) The Diatomite of Cuithir. Min. Mag. vol. VII. p. 35, 1887.
Witham, H. (31) A description of a fossil tree discovered in the quarry at Craigleith near Edinburgh. Nat. Hist. Soc. Northumberland, Durham and Newcastle-on-Tyne, 1831.
—— (33) The internal structure of fossil vegetables found in the Carboniferous and Oolitic deposits of Great Britain. Edinburgh, 1833.
Woodward, H. (72) A monograph of the British fossil Crustacea belonging to the order Merostomata. Palaeont. Soc. 1866–78.
Woodward, H. B. (87) The Geology of England and Wales. London, 1887.