Then again, Wikipedia says there were processes such as Calotype introduced in 1841, so maybe so... It would be interesting to specify what type of process was used. (religion.blogs.cnn.com)
Employing Calotype negatives and skillful draftsmanship, Dan Estabrook uses his dreams as source material, making images that defy our understanding of physical existence, and challenging the assumption that photographs are rooted in reality. (baxterst.org)
Robert Adamson was a Scottish chemist and photographer who is best known for producing 2500 Calotype photographic prints with painter David Octavius Hill. (biography.com)