A

José Alemany
(Spain)[1895–1951] b. Blanes, Gerona, d. Provincetown

b/w shadowgraph, 1939 onlineonly.christies.com

Circular shapes, bw shadowgraph, ca. 1938 www.getty.edu

Emilio Amero
(Mexico)[1901–1976] b. Ixtlahuaca,

Photogram, 1932, b/w enlarger experiment, multi-exposure, 24.4 × 19.4 cm americanart.si.edu

Markus  Amm
(Germany)[1969] b. Emsdetten, l. Geneva

Untitled, multi exposure b/w photograms of several layers of triangular stencils, 18 x 24 cm, 1999 www.saatchigallery.com

Carl David Anderson
(USA)[1905–1991] b. NY, d. San Marino/CA

first picture of a positron track, cloud chamber photograph, 1932 www.scienceandsociety.co.uk

Anna Atkins
(UK)[1799–1871] b. Tonbridge/Kent, d. Halstead

British Algae, complete album, October 1843. Former owner: John Herschel digitalcollections.nypl.org

Dandelion, Papaver and Festuca grasses from 'British and Foreign Flowering Plants and Ferns', c.1854. collections.vam.ac.uk

Polypodium vulgare, cyanotype of fern leaf, around 1854 www.staatsgalerie.de

Carix(America), cyanotype of about ca. 1850 collections.eastman.org

Polypodium crenatum, Norway, 1854 www.gallery.ca

Cyanotype Albums of plants from 1853 (Britsh Ferns) and 1843 (British Algae) www.scienceandsociety.co.uk

Cyanotypes of British and Foreign Ferns, full album with 100 prints, 1853 www.getty.edu

British Algae, a complete edition of 307 cyanotypes (ca. 1843-1853), acquired in 2017 by the Rijksmuseum www.rijksmuseum.nl

Pidder Auberger
(Germany)[1947–2012] b. Lohberg, d. Burchach

Schulterküsse, cliché verres in combination with graphics/painting, 1988 www.photoscala.de

cliché verres combined with photographic negatives, 1989-2001 www.artnet.com