Abstraction, Porch Shadows, Twin Lakes, Connecticut, from the portfolio On My Doorstep. SFMOMA [online]. [cit. 2022-12-23]. Dostupné online. (anglicky)
theartstory.org
Paul Strand Photography, Bio, Ideas. The Art Story [online]. [cit. 2022-12-23]. Dostupné online.
yale.edu
artgallery.yale.edu
Abstraction, Porch Shadows, Twin Lakes, Connecticut, from the portfolio Paul Strand: The Formative Years 1914–1917 | Yale University Art Gallery. artgallery.yale.edu [online]. [cit. 2022-12-23]. Dostupné online.