Drawing from Daguerreotypes

Sketching around with pencils and Vidalon. I know you are probably asking what is a daguerreotype? It is a really accurate old fashioned photograph that predates the old black and white photos we know of from the civil war time. It is a process that involves a light-sensitive silver-coated metallic plate. I am unsure of the whole process, but the images are very sharp and not washed out. These daguerreotype images are from the 1840's from Bill Whitaker's studio. It was a great exercise and a fun study.