H.F. Ziegler (New York), n.d., Continental Photograph Gallery. 794 Third Ave., bet. 48th & 49th Sts. New York. H.F. Ziegler, Manager. Bring the Children, Cabinet card, back, Private collection of Ken Burkhart, LL/42549
H.F. Ziegler (New York) n.d. Continental Photograph Gallery. 794 Third Ave., bet. 48th & 49th Sts. New York. H.F. Ziegler, Manager. Bring the Children