The document summarizes a 1857 New York Times article about Henry A. Crabb and his presence in Sonora, Mexico according to the writings of Francis D. Clark and historian James M. McPherson. Clark believed Crabb was in Mexico to acquire more land for the Confederacy, not for filibustering. However, McPherson stated that Crabb led a filibustering invasion of Sonora in 1857. The Mexican troops ambushed and killed Crabb and many others. The San Diego Journal of History later noted that San Diego was the closest California city to where Crabb and his men were executed.