From Theatrum Mortis Humanæ Tripartitum, 1682.

A witch at her cauldron surrounded by beasts. Etching by J. van de Velde II, 1626.

"Grotesque carvings illustrative of the demonology of the Middle Ages."  "Ancient door in the Cheetham Library, Manchester, from a drawing by C. W. H."  From Sketches of the Philosophy of Apparitions by S. Hibbert, 1825.

A decoration by Alice C. Morse for At the Ghost Hour by Paul Heyse, 1894.

"A horror began to settle down upon him," from Cassell's, 1896.

Here's a precursor to the steady flow of demonic imagery on Tumblr.  From Jugend, 1897.

Mark Pahlow, founder of Archie McPhee, writes: "Thanks for your hard work of unearthing all the great material you post.  You are a saint, albeit from the netherworld."

"Then all the spirits that swell in darkness shall obey the wearer," from "The Mystery of Precious Stones" in Cassell's, 1896.

"The awfully ugly chickens," from Judy, Or The London Serio-Comic Journal, 1876.  [A fairy tale princess is left a sitting of eggs as her inheritance, promised by a sorcerer to contain the very best golden egg laying geese but requiring 15 years to hatch.  The eggs have to be sent overseas for the hatching process, and a cargo of demoniacal atrocities comes back to the expectant maiden.  Having believed herself to be an heiress, the maiden has systematically snubbed all her courtiers and is now compelled to adopt needlework as a means of keeping her opera-box (the principal of her simple wants).  Her respectable parents are astonished by the demoniacal chicks; it is the way of respectable parents to be surprised when their family turns out badly.]

"Ange et démons."  From Un Autre Monde by Grandville.

From Charley Wag, the New Jack Sheppard, 1861.

"Hindhead [Surrey], the Devil's Jumps."  From c. 1910.