Question: Walker Evans' photographs that inspired The Tender Land were intended to document what?

Context paragraphs:
Let Us Now Praise Famous Men: Let Us Now Praise Famous Men is a book with text by American writer James Agee and photographs by American photographer Walker Evans, first published in 1941 in the United States.  The work documents the lives of impoverished tenant farmers during the Great Depression.  Although it is in keeping with Evans' work with the Farm Security Administration, the project was initiated not by the FSA, but by "Fortune Magazine".  The title is from a passage in the Wisdom of Sirach (44:1) that begins, "Let us now praise famous men, and our fathers that begat us".

Walker Evans (racing driver): Roger Walker Evans (born December 3, 1938) is an Off-road Motorsports Hall of Fame driver.  He was also a driver and owner in the NASCAR Craftsman Truck Series.  Nicknamed "The Legend", he is the father of off-road racer Evan Evans.  He resides in Riverside, California.

The Tender Land: (The Tender Land) is an opera with music by Aaron Copland and libretto by Horace Everett, a pseudonym for Erik Johns.  The opera tells of a farm family in the Midwest of the United States.  Copland was inspired to write this opera after viewing the Depression-era photographs of Walker Evans and reading James Agee's "Let Us Now Praise Famous Men".  He wrote the work between 1952 and 1954 for the NBC Television Opera Workshop, with the intention of its being presented on television.  However, the television producers rejected the opera.

Alec Soth: Alec Soth (born 1969, Minneapolis, Minnesota, United States) is an American photographer, based in Minneapolis, who makes "large-scale American projects" featuring the midwestern United States. " New York Times" art critic Hilarie M. Sheets wrote that he has made a "photographic career out of finding chemistry with strangers" and photographs "loners and dreamers".  His work tends to focus on the "off-beat, hauntingly banal images of modern America" according to "The Guardian" art critic Hannah Booth.  His work has been compared to that of Walker Evans and Stephen Shore.  He is a member of Magnum Photos.

LaToya Ruby Frazier: LaToya Ruby Frazier (born 1982) is an American artist and professor of photography at the School of the Art Institute of Chicago.  From Braddock, Pennsylvania, Frazier began photographing her family and hometown at sixteen, revising the social documentary traditional of Walker Evans and Dorothea Lange to imagine documentation from within and by the community, and collaboration between the photographer and her subjects.  Inspired by Gordon Parks, who promoted the camera as a weapon for social justice, Frazier uses her tight focus to make apparent the impact of systemic problems, from racism to deindustrialization to environmental degradation, on individual bodies, relationships and spaces.  Speaking to the New York Times about her position, Frazier said, “We need longer sustained stories that reflect and tell us where the prejudices and blind spots are and continue to be in this culture and society...This is a race and class issue that is affecting everyone.  It is not a black problem, it is an American problem, it is a global problem.  Braddock is everywhere.”

Tender board: A Tender board is a committee or institution involved in the Government procurement procedure.  It formulates requirements for the intended purchase of goods or services, compiles these formulations in a tender document, and hands these documents out to interested suppliers, usually for a fee.  After the closing date for bids, the tender board evaluates the proposals received and decides on the awarding of the tender.

Walker Evans: Walker Evans (November 3, 1903 – April 10, 1975) was an American photographer and photojournalist best known for his work for the Farm Security Administration (FSA) documenting the effects of the Great Depression.  Much of Evans's work from the FSA period uses the large-format, 8x10-inch (200x250 mm) camera.  He said that his goal as a photographer was to make pictures that are "literate, authoritative, transcendent".  Many of his works are in the permanent collections of museums and have been the subject of retrospectives at such institutions as The Metropolitan Museum of Art or George Eastman House.

Kathleen Finneran: Kathleen Finneran (born December 3, 1957 in St. Louis, Missouri), is an American author.  She wrote the book-length family memoir "The Tender Land" (Houghton-Mifflin, 2000).  Finneran received a Whiting Award in 2001 and a Guggenheim Fellowship in 2003.

Evan Evans (racing driver): Evan Walker Evans (born February 11, 1965) is an American professional off-road racer.  He raced in the Championship Off-Road Racing (CORR) series in the 1990s when he was the Pro 2 champion in CORR despite racing using hand controls since he is a paraplegic.  He continues to race occasional races as of the end of the 2012 season.  Evan Evans is the son of off-road racing "The Legend" Walker Evans.

Edward Evans (actor): Albert Edward Walker Evans (4 June 1914 – 20 December 2001) was an English film and television actor.

Supporting paragraphs: The Tender Land Walker Evans
Answer: effects of the Great Depression