Did a quick search on Google.com and this is what I found:
http://docsouth.unc.edu/neh/boxbrown/menu.html
Henry Box Brown, b. 1815,
Charles Stearns
Narrative of Henry Box Brown, Who Escaped from Slavery,
Enclosed in a Box 3 Feet Long and 2 Wide.
Written from a Statement of Facts Made by Himself.
With Remarks Upon the Remedy for Slavery.
By Charles Stearns.
Boston: Brown and Stearns, 1849.
Here is his journal:
http://docsouth.unc.edu/neh/boxbrown/boxbrown.html
Thanks for the info...I've never heard of him before!