The Voices from the Past series is a collection of audiobooks based on the first-hand accounts of women in American history. Previous albums have used period portraits of the authors, and Elinore Stewart's letters were previously published in a book illustrated by N.C. Wyeth!
Since the illustration was created for print, it was probably painted in greyscale, and unfortunately, the above image was the best quality I could find. That meant that in addition to colorizing it, I needed to essentially repaint it. I copied his brushwork as best I could, and it was a very good learning opportunity.
The background image was painted by Thomas Moran, one of several paintings he did of the Green River Valley of Wyoming, where Elinore Stewart lived.