With the need for a street plan for Upper Manhattan, in 1860 the state legislature created another commission, this one of seven residents of Upper Manhattan and called the Fort Washington Commissionwith Olmsted and Vaux as consulting landscape architectsto come up with a plan of action which would not be a copy of the grid plan promulgated by the original Commission. The new plan was to take into account "the elevated, irregular, and rocky formation of that district" because it would be "impracticable and ruinous to land owners, and injurious to the interests of the city, to grade and layout streets and avenues ... upon the present plan of the city." However, due to the influence of businesses, land speculators and railroad interests, the plan created by the new commission in 1863 essentially called for an extension of the original grid, and by 1865 the legislature had disbanded the commission, and turned over responsibility for an Upper Manhattan street plan to Andrew Haswell Green's Central Park Commission.