Thanks, Philip! The information is greatly appreciated and very informative. I will look into the books you mentioned.
It's interesting to note that, in Korea, the bow remained an official military weapon until the mid-1890s, but was probably not officially used in battle after the 1860s. In the US military incursion of 1871, although there were bows in Korea's arsenal (at least on paper), none were used and none captured by the US. In the French incursion of 1866, there is evidence they were still being used militarily and at least one was captured by the French (That bow was given to me almost a decade ago by a friend in France and I gave it to the Korean Army Museum).
Thomas
http://www.shinmiyangyo.org