Ancestry.com will soon release a US passport collection with "millions of names from the years 1796 to 1925."
Passports became more popular in the late 1840s. In 1914, American citizens were permitted to travel abroad without passports. If your ancestors were travelers this will be a great collection for you. If you find a hit for one of your ancestors you will get a little gold mine of information. Many of these applications include photos. [Link]This announcement comes with a sample image, which is almost readable if you squint really hard.
What significant event was this person planning to attend?
When did his twin brother die?