Detailed Instructions: In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
Q: One of the things Avedon is distinguished by as a photographer is his large prints, sometimes measuring over three feet in height. His large-format portrait work of drifters, miners, cowboys and others from the western United States became a best-selling book and traveling exhibit entitled In the American West, and is regarded as an important hallmark in 20th century portrait photography, and by some as Avedon's magnum opus.
A:
who is the first photographer that is discussed in the reading from his in the american west series