Keep an open mind when browsing resources

In her article, "Researching Civil War Volunteer Infantrymen from Havana, Illinois,"
Judy Rosella Edwards reminds us that key information may be found in the most unlikely sources. In this case, a Civil War military regimental history happens to include the names of those who pre-paid for copies of the book -- you never know who that might include. So keep in mind when browsing resources for your time and place, there may be more to a source than meets the eye.