In the 1790s, Banneker also helped survey and lay out the land for Washington, D. C., which became the nation's capital.
1790年代，班纳克也帮忙勘测及绘制华盛顿特区的土地，而华盛顿特区后来成为国家的首府。
2
The almanac included information on medicines and medical treatment, and listed tides, astronomical information, and eclipses calculated by Banneker himself.