Wet collodion is a 19th century-era photography process that requires photographic material to be coated, sensitized, exposed, and developed within the span of about fifteen minutes.

19th-Century Schoolgirls Were Incredibly Good at Drawing Maps Many schools required students to trace or re-create maps in order to learn skills that may have helped them later in life.

The Vault A Nineteenth-Century Ice Map, Carving Up Northeastern Rivers By Rebecca Onion Jan 26, 20181:52 PM ...