A preview screening of a new PBS documentary about the late New Canaan photographer Pedro E. Guerrero will be held at 3 p.m. Sunday at the New Canaan Historical Society, 13 Oenoke Ridge

New Canaan architect Alan Goldberg will introduce the film and members of Guerrero’s family will be in attendance. Admission is free, but reservations are required.

Guerrero lived in New Canaan for almost 50 years, during the heyday of his international photography career. Born and raised in segregated Mesa, Arizona, Guerrero became one of the most sought-after photographers of the “Mad Men” era, using his outsider’s eye to produce insightful studies of important modernist architecture, including many of the modernist houses in New Canaan. He died in 2012.

Using an exclusive interview with Guerrero along with his images, the one-hour documentary explores his collaborations with three of the most iconic American artists of the 20th century: architect Frank Lloyd Wright and sculptors Alexander Calder and Louise Nevelson.

“American Masters — Pedro E. Guerrero: A Photographer’s Journey” premieres nationwide Friday, Sept. 18 at 9 p.m. on PBS in New York during National Hispanic Heritage Month. In Connecticut, the film will air Thursday, Oct. 1 at 8 p.m. on CPTV4U and Friday, Oct. 3 at 11 p.m. and Sunday, Oct. 4 at 12:30 p.m. on CPTV. This film is a special co-presentation of VOCES and “American Masters.”

For reservations and more information, call 203-966-1776.