Hello, all. I'm hoping you might be able to help with a question I have about pre-1900s camera shutters. Question: Before 1900, could a photographer take a photo of themselves alone (without a mirror) with a device like a shutter release cord/string or even a timed shutter? A few notes: - I believe air shutter release bulbs weren't invented until early 1900s example here. - Could it be possible that some photographers used a makeshift string attached to the shutter? - Perhaps there was a timed shutter with a winding device on top. Example here. Thank you!