This "Bob Dylan, 1962" by John Cohen is a gelatin silver print from the collection of Henry J. Simonds. The photograph can be seen in "Digital to Daguerreotype: Photographs of People" running through Oct. 18 at the Carnegie Museum of Art in Pittsburgh.

PITTSBURGH — The Carnegie Museum of Art Presents "Digital to Daguerreotype: Photographs of People" through Oct. 18 in the Works on Paper Gallery at the museum, 4400 Forbes Ave.

The exhibition chronicles the evolution of photographic processes and reveals how photographers from the last 160 years have explored the human subject through an exceptional range of practices, from daguerreotypes, to black-and-white gelatin silver prints and color chromogenic prints, to digital inkjet prints.

"Digital to Daguerreotype" features 73 photographs from the permanent collection and local private collections, organized in reverse chronological order. The first images on display are inkjet prints and the last are daguerreotypes, a process first invented in 1839.

Programs associated with this exhibit include "Early Photography: New Uses for Old Techniques" from 6 to 7 p.m. July 16 in the CMA Theater; and "Alternative Photography: Cyanotype" from 10:30 a.m. to 3 p.m. July 11 for an extra fee, and registration is necessary.

Call 412-622-3131 or visit the Web site at www.cmoa.org

The adjoining Carnegie Museum of Natural History is exhibiting "Doublexposure: Photographing Global Climate Change" through Sept. 13.

Opening July 18 at the Museum of Art will be "Documenting Our Past: The Teenie Harris Archive Project,

Part Three," which will continue through Nov. 1.Curated by the oldest son of Teenie, Charles A. "Little Teenie" Harris, the show features 184 photographs divided into the themes of landmarks, celebrities, children, family, occupations, politics, protests, social issues, sports, and weddings and religious events.The exhibition also features 50 photographs from the "One Shot Teenie Harris Photo Contest." The competition, sponsored by Carnegie Museum of Art, the Housing Authority of the City of Pittsburgh, and the Police Athletic League's youth antiviolence initiative, challenges young people living in Pittsburgh public housing to photograph the people and places in their lives.Regular hours are 10 a.m. to 5 p.m. Tuesdays through Saturdays, and open until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Additionally the museums be open Mondays through Aug. 31, though closed Saturday for the Fourth of July and Labor Day, Sept. 7.Regular admission, which includes both museums, is $15 for adults, $12 for senior citizens, and $11 for students and children age 3 and older, and free for members and children younger than 3.Call 412-622-3131 or visit the Web site, www.carnegiemnh.org.

Chromogenic print "Musical Chairs, 1990" by Tina Barney is part of "Digital to Daguerreotype: Photographs of People" showing at the Carnegie Museum of Art in Pittsburgh.