by Herbert Joseph Spinden
by Eugène-Emmanuel Viollet-le-Duc
by Edward B. (Edward Burnett) Tylor
by Désiré Charnay
by Marshall H. (Marshall Howard) Saville
by Alfred Oscar Coffin
by Benjamin Moore Norman
by Lindesay Brine
by Philipp J. J. (Philipp Johann Josef) Valentini
by Martin I. (Martin Ingham) Townsend