Longstaff, L. W., & Brockwell, M. W. (1915). Extract from the Catalogue of the pictures in the collection of Lord St. Oswald at Nostell Priory by Maurice W. Brockwell: Published by Constable & Co Ltd 1915 : photographs by W F Gray.
Lua i Stíl Chicago (17ú heag.)Longstaff, Leonard William, agus Maurice Walter Brockwell. Extract from the Catalogue of the Pictures in the Collection of Lord St. Oswald at Nostell Priory by Maurice W. Brockwell: Published by Constable & Co Ltd 1915 : Photographs by W F Gray. 1915.
Lua MLA (8ú heag.)Longstaff, Leonard William, agus Maurice Walter Brockwell. Extract from the Catalogue of the Pictures in the Collection of Lord St. Oswald at Nostell Priory by Maurice W. Brockwell: Published by Constable & Co Ltd 1915 : Photographs by W F Gray. 1915.