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Paysage d'été - 1917 - Egon Schiele

Ohne Titel (26.1.2000, Firenze) by Gerhard Richter

Vessel by Allison Reimus, 2012

Postman delivering mail at Greenock - 1938.

Photo byTess Thackara. (Mark di Suvero at Crissy Field)

Jeff Koegel 254. Lazy Arabesque

"A stack of scaffolding components on a truck bed - a found sculpture. Prague, Czech Republic."

This Weeks Sky at a Glance (2) - "A cluster of board magnets in an empty display in front of the Štefánik Observatory. Prague-Petřín, Czech Republic"

Being Supportive by goenetix, via Flickr

"In direct line with another & the next" - photo by Matt Green, art by Lawrence Weiner

"Mirror" by Noelle Hoffman

"The Pot of Shells" by Mary Fedden (1971), via Jane Brocket

Log and Golden Gate Bridge, San Francisco, from Portfolio Two: Twelve Photographs - by Pirkle Jones

* by ohbara, via Flickr

Yvonne Fehling & Jennie Peiz (thanks @Megan G)

August Strindberg, "Double Picture," 1892

"Explorer" by Cara Barer.