Report On Fort Armstrong

Source

1836 Map

The high bank of Rock river...south fence while the Mississippi formed the north one... . Immediately west of, and following the west line of fence, was a well beaten and extensively traveled road, leading from Saukenuk to the Mississippi, or the island, where Fort Armstrong (built in 1816,  and named in honor of Gen. John Armstrong, then Secretary of War,) and the trading house of Col. George Davenport stood.  [Source]

Source

...report to the Senate whether or not Fort Armstrong, on Rock Island, in the State of Illinois, has been abandoned as a military post... .