Vintage skull from Voyages and Adventures in Equatorial Africa... French Edition, Revised and Expanded (1863). Original from… Free Image from public domain license 
Vintage Victorian style retro typewriter engraving. Original from the British Library. Digitally enhanced by rawpixel. Free Image from public domain license 
Deer skull with horns from Favourite English Poems And Poets published by Sampson Low, Son, & Marston (1870). Original from… Free Image from public domain license 
Tropical tree from Manual Of Geology, Treating Of The Principles Of The Science With Special Reference To American Geological… Free Image from public domain license 
Luggage from The Tourist's Handy Guide to Scotland (1880) published by William Paterson. Original from the British Library.… Free Image from public domain license