Equivalents
... that Alfred Stieglitz's Equivalents series of cloud photographs are regarded as the earliest examples of abstract photographic art?
... that <a href="./Alfred_Stieglitz" id="mwHaI" rel="mw:WikiLink" title="Alfred Stieglitz">Alfred Stieglitz</a>'s <i id="mwHaM"><b id="mwHaQ"><a href="./Equivalents" id="mwHaU" rel="mw:WikiLink" title="Equivalents">Equivalents</a></b></i> series of cloud photographs are regarded as the earliest examples of <a href="./Abstract_art" id="mwHaY" rel="mw:WikiLink" title="Abstract art">abstract photographic art</a>?