Who took this photograph of Agassiz Column in 1878?

In the 1870's this Pioneer Photographer was employed by the USGS (United States Geological Survey) to take pictures of the Western frontier.

Who took this photograph in 1869 titled, "Meeting of the Rails, Promotory, Utah"?

Which photographer is credited for taking these photographs while in Yellowstone National Park during the 1870's?

In 1858 this English photographer traveled to the Middle East (Egypt) to take these photographs to create novelty postcards to "share the world" with people. Who was this photographer?

"Galloping Horse" was a photograph created by which early pioneer in photography, leading the way into "motion pictures"?

As we learned about Matthew Brady and William Henry Jackson, both rising pioneer photographers of the 19th century, which of these two put everything they had into their endeavors and ended up dying penniless (their photographs not being desired for purchase by the public)?

In 1878 Leland Stanford (American Industrialist and politician) hired this photographer who was using photography to study motion, to take pictures that would settle a bet regarding how a horse runs and if all 4 hooves actually leave the ground all at once.

In order to show his "motion photography" to the public, Eadweard Muybridge had to invent this machine in 1879/1880 which was the precursor to motion pictures...or otherwise known as "movies". What was this machine/device called?