MLA

Simpson, Randolph Linsly, 1927-1992. John H. Clarke, New Orleans, LA Three quarter length portrait of man standing, right hand grasping rustic chair, left on vase with plant on pedestal. Cabinet photograph. Box 9, folder 247. circa 1875. https://collections.library.yale.edu/catalog/2002299.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 247"])(circa 1875)[John H. Clarke, New Orleans, LA Three quarter length portrait of man standing, right hand grasping rustic chair, left on vase with plant on pedestal. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002299.