De la página 194 de The Wild Sports of Southern Africa … Fifth edition [With plates.], de Sir William Cornwallis Harris (1852). Cortesía de la British Library. Click para ver grande.
De la página 344 de The boy travellers in the Russian empire: adventures of two youths in a journey in European and Asiatic Russia, with accounts of a tour across Siberia, de Thomas Wallace Knox (1886). Cortesía de Internet Archive. Click para ver grande.
De la página 67 de Dramatic games and dances for little children, de Caroline Crawford (1914). Cortesía de Internet Archive. Click para ver grande.
De la página 63 de Physical culture, de Bernarr Aldolphus MacFadden (1899). Cortesía de Internet Archive.
De la página 72 de American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits, de Henry C. McCook (1889). Cortesía de Internet Archive.