Your two images are enlargements of actual photographs be they a tintype, cdv or cabinet card; most likely the enlargements were done in the 1880's or 1890's. After enlargement, an artist used charcoal or colored crayons to embellish the photo, paying special attention to facial features. The artist did not add any features not in the original photo. He merely enhanced the details found in the photo. These enlargements as a finished product had a standard inch size of 11 x 14, 16 x 20, and 20 x 24, I believe. Enlargement of photos which began in the 1880's was all the rage in America at the time. Many people today are confused and think these images are sketches or drawings, but they are not. As I said they are actual enlargements of actual photos that then are colored in by a skilled artist.