In December of 1940, the
Abraham Lincoln Quarterly published an article which it reprinted from the February 12, 1940
Easton Express newspaper from Pennsylvania. In this article is a pretty detailed explanation of Lincoln's motivation as well as how it came about that Staples's pension application was turned down.
The PDF function on the website only allows you to load ten pages at a time. To get the entire article, you will have to go to the page number drop box and load the next ten pages and then the next ten. There are about 12 pages to the article.
http://quod.lib.umich.edu/a/alajournals/...f&size=100
Also, a man by the name of Bernard J. Cigrand, a dentist known as the father of Flag Day, wrote an article in 1911 which was published into 1912 in various papers around the country on the substitute story. Here is the article as it appeared in the
Manchester (Iowa) Democrat on February 7, 1912. It appears that the author of the Easton article got some of the information from Cigrand's 1911-1912 article.
Best
Rob