The full file should be about 550-650 words and avoid duplicating information and reference readings—try to say something new with each sentence.
http://blog.nuclearsecrecy.com/wp-content/uploads/2012/06/1945-08-24-ChiTrib-DDT-Another-Atomic-Bomb.jpg
Source: Chicago Tribune, Aug. 24, 1945
Silent Spring by Rachel Carson the Pesticide Threat
Source: Len Norris, Vancouver Sun, June 9, 1964
https://www.pritchettcartoons.com/1995-cartoons/french-tests.jpg
Source: John S. Pritchett, Honolulu Weekly, Sept. 6, 1995
{Jacques Chirac served as president of France from May 1995 to May 2007}
Related image
Source: Chip Bok, Akron Beacon Journal, 2007
Endangered Species Act: July 25, 2018
Source: Adam Zyglis, Buffalo News, July 25, 2018
https://i2.wp.com/thenewsrep.com/wp-content/uploads/2018/10/Cartoon-1.jpg?fit=750%2C611&ssl=1
Source: Joseph LaFave, NewsRep, Oct. 22, 2018