These are from the USDA Pomological watercolor website.
They have this introductory statement
"USDA Pomological Watercolor Collection is one of the most unique collections in the Rare and Special Collections of the National Agricultural Library (NAL). As a historic botanical resource, it documents new fruit and nut varieties, and specimens introduced by USDA plant explorers from the late 19th and early 20th centuries. The collection spans the years 1886 to 1942. The majority of the paintings were created between 1894 and 1916. The plant specimens represented by these artworks originated in 29 countries and 51 states and territories in the U.S. There are 7,497 watercolor paintings, 87 line drawings, and 79 wax models created by approximately 21 artists. Lithographs of the watercolor paintings were created to illustrate USDA bulletins, yearbooks, and other publications distributed to growers and gardeners across America. "
They have the following attribution requirement."Use of the images in the U.S. Department of Agriculture Pomological Watercolor Collection is not restricted, but a statement of attribution is required. Please use the following attribution statement: "U.S. Department of Agriculture Pomological Watercolor Collection. Rare and Special Collections, National Agricultural Library, Beltsville, MD 20705"
The "Royal Black" fig original had the following notation:"Mr. Tassa, living at 631 Maryland Ave., S.W. has brown, white, and black fig varieties said to have been brought from Italy in about 1894 by his brother who lived near Pennsylvania Ave. and 2nd Street, N.W. The black fig resembles this drawing. A son of this brother who imported the figs lives at 1365 Meridian Place, N.W., and has two fig trees. of the "black" variety growing on the premises of a house owned by him at 1368(?) Meridian Place (opposite side of street, next to alley). H.R. Fulton, August, 1942"
I did some minor editing. My eyes need a little sharpening and color enhancement, and I removed some extra border so the images would be larger. The watermark is automatic.
Edit: I made some changes to this post for clarity, and improved the photo uploads. 9.25.2020