It's hidden pretty deep on the Browning web site:
Q. I would like historical information about my Browning firearm. Where can I get this?
A. Add a piece of history to your firearm! For $39.95 (Shipping included), our Browning Historian will research your firearm and type a historical letter. Historical Letters include: Date of manufacture, invoice number, date of sale, to where the gun was shipped, and a description of the firearm. All letters come on official Browning Historic Letterhead which is authentically stamped & signed by the Historian and are enclosed in a plastic cover. For more information, please contact Browning Customer Service at 1-800-333-3288.