I have spent a whole lot of time on Tumblr sites in the last month or two. Most of the images, including the one now on the header, posted here in that period came from the following sites which I acknowledge, commend and recommend to everyone. The...Tumblrs? of these sites seem to be all young people, college age, one is a 17-year old freshman! They have marvelous eyes, these are brilliantly curated sites.

http://c-4-r-n-a-g-e.tumblr.com
http://perfection-in-black.tumblr.com
http://beautifulgreyscale.tumblr.com
http://lovesarthistory.tumblr.com
http://architecturia.tumblr.com
http://blackpaint20.tumblr.com
http://alexandra-sousaa.tumblr.com
http://art-utopia.tumblr.com
http://verticalthings.tumblr.com
http://goodolarthistory.tumblr.com
http://lyghtmylife.tumblr.com