All 2,242 of James Sowerby’s illustrations from his compendium of knowledge about mineralogy in Great Britain and beyond published between 1802 and 1817 and arranged by color.

Mix & match avatar illustrations in Sketch App with this free library.

Mix-&-match illustrations of people with a design library for InVIsion Studio and Sketch.

Open Peeps is a hand-drawn illustration library to create scenes of people. You can use them in product illustration, marketing, comics, product states, user flows, personas, storyboarding, quinceañera invitations, or whatever you want! ⠀

What to do. Illustrations by Gorey.

Simply a collection of beautiful book covers.

Excellent and quirky nature paintings.

Nice, quirky line drawings. Also a musician: see the 'Little Wings' and 'Be Gulls' links in the impossible navigation.

A huge collection of excellent drawings, realist (and surreal) photography, painting, collages, and more. Good for wasting a few hours and wishing you were cooler.

"experiments with hand lettering...a ongoing series based on spam subject lines in my mailbox" Excellent.

Excellent surreal porcelain sculptures, drawings, etc. Her "Once I had a Child" is used on Canadian supergroup Swan Lake's "Beast Moans" cover. Awesome!

From the US National Library of Medicine, a huge collection of free, public-domain images from anatomical atlases. A great wealth of material. Wish it were designed better and that the books were all scanned rather than some photographed.

The story behind why the O'Reilly books have animal engravings on them.

She's behind all of The Decemberists' album artwork.