February 23, 1836 — The Mexican Army arrives in Bexar and gives the Alamo Defenders the opportunity to surrender or be put to the sword. In response, William Barret Travis orders the 18-pounder, located at the southwest corner of the fort, to be fired into the Mexican encampment.
Moving forward to 1917, the cannon, which had been mounted on a plinth in San Pedro Springs Park disappears, leaving us with many questions today. Where did it go? How large was it? What did it look like?
In the Fall of 2020, the Alamo released “The Alamo 18-Pounder Cannon: Research to Replica.”
This report told the story of the 18-pounder cannon and its mysterious disappearance, and detailed the research done to determine the age, size, and style of cannon in order to create a 3D rendering. Much of the research done on the specs of the 18-pounder was based on cannons from the battle currently in the Alamo collection, as well as period photos of this and other cannons. Based on this information, the Alamo Research team, along with the help of artillery experts from around the world, determined that the Alamo 18-pounder was very likely a Swedish Finbanker cannon made in the late 1600s. With this guidance, along with the historic photos of the cannon and measurements taken from the cannon’s plinth, which is still located in San Pedro Springs Park, SRO Associates, Inc. was able to create a 3D rendering of what the cannon looked like when it was still intact.