Benjamin Banneker created the first clock to be made in America. Banneker was also a farmer, mathematician, astronomer, author and land surveyor. Jefferson recommended Banneker to be a part of a surveying team to lay out Washington, D.C. Appointed to the three-man team by president George Washington, Banneker wound up saving the project when the lead architect quit in a fury – taking all the plans with him. Using his meticulous memory, Banneker was able to recreate the plans.