This Amazon Kindle format book is authored by Lois Emerson, with 135 photos and images of vintage calendar art restored for publication by Sumner Nelson. It’s currently available only in Kindle format on the Amazon store. There is a Kindle app for Windows and Mac computers, and all mobile devices. The Secret Source – Beatrice Tonnesen and the Calendar Art of The Golden Age of Illustration.
From the Introduction by Lois:
If you are a collector of those popular art prints that graced calendars and advertising items in the early 1900's, chances are you own prints by Beatrice Tonnesen (1871-1958). And you may not even know it!
That's because a signed Tonnesen is a relative rarity. Beatrice Tonnesen, an artist-photographer based in Chicago from about 1896-1930, was the artistic genius behind many of the most popular art prints of the era. Though she did, occasionally, paint from her own photos and sign the finished artwork, this was not her usual practice. Most often, her original photos were purchased by calendar publishers or advertisers, copyrighted, tinted, colored or otherwise enhanced, then published without Tonnesen's signature, or any type of acknowledgment of her work.
Even more surprisingly, some of her photographs formed the basis for art prints painted and signed by other highly successful artists of the day! Calendar artists R. Atkinson Fox (1860-1935) and Homer Nelson (dates not found) are known to have painted from her work, and other, lesser known signatures appear on popular prints that originated as photos by Tonnesen.