The 49th Congress Public Laws ch. 390. An act to regulate the construction and operation of elevators within the District of Columbia, and for other purposes. ch. 355. An act authorizing the Treasurer of the United States to credit the District of Columbia with certain moneys in lieu of investing the same in bonds. ch. 272. An act to regulate steam engineering in the District of Columbia. ch. 49. An act to authorize the Commissioners of the District of Columbia to make police regulations for the government of said District. ch. 58. An act to change the name of Uniontown to Anacostia.