satellite is straight months of negative existed, could be a positive image made on albumen paper, duke lou, if you will, that held the light sensitive material to paper. there is no way to much of anything except the size that you shot is what you see is what you get. if they can cause back to why so many of these were shot this stereo view kurds because stereo view kurds were very, very popular then. another mh -- another photo that is very popular then were visiting cards of the state. but they were visitor cards about the size of a baseball card and these were mailed to family and friends, traded blake baseball cards. and those were made with cameras outfitted with four or six or eight months is so that the is made from that camera could then replicate six, eight, four times, whatever. photography then was rather archaic. but what i found amazing was that while it was archaic, the overall technical quality of the images was really remarkably good. now these were all big negatives. they're not the size of say the size of say 35-millimeter 90 days, but indicative this size, the equivalent