also constructed in the park in 1913, and significantly expanded in summer 1915 and spring 1916. The first three of the park's many baseball diamonds were established in early 1915, and extensive cinder-lined walking paths constructed in summer 1915 and spring 1916. The Corps proceeded to clear grade, plow, and seed of land in the center of the park for use as athletic fields in the summer of 1916 and again in the spring of 1917. But this land was turned over to the Boy Scouts of America for use as a victory garden. Golf course and fieldhouses Much of the park remained undeveloped until 1913, when a "fieldhouse" with lockers and showers was proposed by the United States Army Corps of Engineers for construction toward the center of the park. No funding for the fieldhouse was provided, but the following year the Corps of Engineers, acting on a request from local sportsmen, won approval for construction of a golf course on the lower two-thirds of the park. Work on the course was delayed for a variety of reasons, but construction finally began in January 1917, when golf course architect Walter Travis visited the city to see the site and begin designing the course. Although funding for construction was approved in May 1918, work was delayed during World War I as temporary soldiers' barracks were built in and victory gardens were extensively planted throughout East Potomac Park. The first nine holes opened on July 7, 1920. A three-hole practice course opened in June 1922, and was expanded to a full nine holes some time in 1923. The final nine holes opened in late September 1924. Work on the fieldhouse occurred alongside the golf course. Construction by the A.C. Moses Construction Co. began in June 1917. By this time, the single fieldhouse had become two fieldhouses, each slightly L-shaped with the long wing of the building on a northeast-southwest axis. The two structures were connected by a breezeway on the south side. World War I delayed their completion, and funding for the structures was scarce. Only one fieldhouse was ready by June 1919, and little additional work had been completed by August 1921. But with the golf course rapidly expanding, the single fieldhouse was quickly overwhelmed. The first fieldhouse was finished and the second one begun and completed by December 1921. A teahouse, a campground for tourists, and horse stables were