This is Volume XI, Issue Number 4 (April 2000) of The Thunderbolt, the newsletter of the Barony March of Mons Tonitrus. Mons Tonitrus is the Cochise County Chapter of the Society for Creative Anachronism, Incorporated (SCA, Inc.), a non-profit educational organization incorporated under the laws of the State of California. The Thunderbolt is published six to twelve times yearly by, and for, members of the Barony March of Mons Tonitrus. It is not an official publication of the SCA, Inc., and it does not delineate SCA policy. Unless otherwise indicated, the contents of this newsletter may be reproduced and used in other SCA publications, as long as the item is reproduced in its entirety, credit is given to the source, and a copy of the publication is sent to the Chronicler of the Barony March of Mons Tonitrus.