Unidentified artist, 1753, Illustration from German Lutheran book Sechs Bücher vom wahren Christentum (Six Tracts on True Christianity), 1753, Book illustration, Private collection of Jack and Beverly Wilgus, LL/49052

Unidentified artist, 1840, Illustration from Light: Its Properties and Effects, (London: Religious Tract Society, 1840), Illustration, hand-coloured, Private collection of Jack and Beverly Wilgus, LL/49053

Unidentified artist, 1875, Artist using a box camera obscura, Book illustration, Private collection of Jack and Beverly Wilgus, LL/31668

Unidentified photographer / artist, Early 19th century, Mahogany sliding box camera obscura, Colour image, Private collection of Jack and Beverly Wilgus, LL/31670

Unidentified maker, Early 19th century, Miragioscope, folding French cardboard camera obscura, Colour image, Private collection of Jack and Beverly Wilgus, LL/49054

Unidentified artist, 1819-1820, Improved Camera Obscura, For the Instruction of Youth in the Art of Drawing & Coloring, Flyer, Private collection of Jack and Beverly Wilgus, LL/49055

Bourgeois Ainé, Mid 19th century, French artist's Camera Obscura by Bourgeois Ainé, Colour image, Private collection of Jack and Beverly Wilgus, LL/49056

1911 (ca), Folder Spiel und Arbeit (Play and Work), Folder cover, Private collection of Jack and Beverly Wilgus, LL/31680

J. Ouartley, 1825 (ca), A drawing tent in the landscape with a lens on the top, Book illustration, Private collection of Jack and Beverly Wilgus, LL/31676

Unidentified artist, 1870 (published), The Dark Chamber, Book illustration, Private collection of Jack and Beverly Wilgus, LL/49057

Unidentified company, 1870 (ca), Trade card for a camera obscura builder, Trade card, Private collection of Jack and Beverly Wilgus, LL/49058

Unidentified photographer, 1870s (ca), The Camera Obscura, Central Park, New York City, [American Scenery], Stereocard, Private collection of Jack and Beverly Wilgus, LL/31686

Unidentified artist, 1877, Inside the Central Park camera obscura, Magazine illustration, Private collection of Jack and Beverly Wilgus, LL/49059

Unidentified artists, n.d., A camera obscura ticket and two advertising cards, Tickets and cards, Private collection of Jack and Beverly Wilgus, LL/49060

Unidentified photographer, n.d., Detail of Coney Island camera obscura from a "Popular Series" "American Views" stereo card, Stereocard, detail, Private collection of Jack and Beverly Wilgus, LL/49061

Unidentified artist, 1880, 14 August (published), Cover of The Illustrated Police News, August 14, 1880, Magazine cover, Private collection of Jack and Beverly Wilgus, LL/49062

Unidentified photographer, 1880s, The camera obscura, Melville Garden at Downer Landing, Massachusetts, Stereocard, detail, Private collection of Jack and Beverly Wilgus, LL/49063

Unidentified artist, 1870s, A camera obscura, Watercolour painting, Private collection of Jack and Beverly Wilgus, LL/49064

Unidentified photographer, Late 19th century, View of New Brighton Beach, Liverpool, England, shows a camera obscura on wheels, Albumen print, Private collection of Jack and Beverly Wilgus, LL/49065

Unidentified photographer, Late 19th century, View of New Brighton Beach, Liverpool, England, shows a camera obscura on wheels, Albumen print, detail, Private collection of Jack and Beverly Wilgus, LL/49066

Unidentified photographer, Early 20th century, 4 3/4"X6" velvet covered trinket box with a photograph of the Jetty at Margate in England on the cover, Trinket box, Private collection of Jack and Beverly Wilgus, LL/49067

Unidentified artist, 1890, 30 August (published), "At the Beach" Cartoon from August 30, 1890 Puck magazine, Cartoon, Private collection of Jack and Beverly Wilgus, LL/49068

W.C. Billington, 1896, The 1896 Cliff House, San Francisco with a camera obscura in the southwest tower, Photograph, mounted, Private collection of Jack and Beverly Wilgus, LL/49069

W.C. Billington, 1896, The 1896 Cliff House, San Francisco with a camera obscura in the southwest tower, Photograph, mounted, detail, Private collection of Jack and Beverly Wilgus, LL/49070

Unidentified photographer, 1896, A camera obscura building at an 1896 Berlin trade fair, Photograph, card-mounted, Private collection of Jack and Beverly Wilgus, LL/49075

Unidentified photographer (Committee on Public Information), 1918, 15 September, The interior of a camera obscura tent used in bomber practice, Gelatin silver print, Private collection of Jack and Beverly Wilgus, LL/31682

Unidentified photographer, 1935, 16 September, Hamilton Field, California, September 16, 1935 showing camera obscura equipment for bomber practice, Gelatin silver print, Private collection of Jack and Beverly Wilgus, LL/49071

Unidentified photographer, 1964, Family by the Giant Camera, Cliff House, San Francisco, Gelatin silver print, Snapshot, Private collection of Jack and Beverly Wilgus, LL/49072

Unidentified artist (Staffordshire ware), n.d., 10" china plate, "Picturesque San Francisco" by Old English Staffordshire Ware showing Cliff House with the camera obscura by its side, Plate, Private collection of Jack and Beverly Wilgus, LL/49074

Jack Wilgus, 2000, The Magic Mirror of Life camera obscura tent - Custom made from a design by Jack and Beverly Wilgus in 2000, Colour photograph, Provided by the artist - Jack Wilgus, LL/49073