Lorenzo Sitgreaves

Transferred, he served in garrison at Fort Monroe, Virginia, in 1833–34, then from 1834 to 1836 again in the Creek Nation, until he resigned his commission on August 31, 1836.

Returning to the field from 1843 to 1844, he was Assistant Topographic Engineer in the improvement of the Hudson River, and in the 1844-45 survey of the harbor of Portsmouth, New Hampshire, and of the reefs of Florida in 1845–46.

[3] During the Mexican–American War, Sitgreaves marched with Gen. John E. Wool from San Antonio through Chihuahua in the fall of 1846, and helped map the route and the region.

When peace returned, he was put in charge of the Boundary Survey of the Creek Indian Territory in 1849 and then again was Assistant in the Topographical Bureau, at Washington, D.C., in 1850.

This expedition was the first systematic survey of the area of the upper region of New Mexico Territory between Zuñi Pueblo and the Colorado River, in search of a route to California.

[3] When the Civil War ended, Sitgreaves was placed in charge of the harbor improvements on Lake Michigan, from August 3, 1865, to June 11, 1866.

[8] Sitgreaves died at his home on May 14, 1888, at his house at 1300 N Street in Washington, D.C., and was buried there at Oak Hill Cemetery.