was designed by Arthur U. Gerber and served as the line's terminus. More than 400 men from Wilmette and Gross Point Village served during World War I. 150 of them served overseas, thirteen (12 from Wilmette, and one from Gross Point) lost their lives in the war. Many women back home volunteered in the Wilmette branch of the American Red Cross Auxiliary. By 1918 the village of Wilmette had increased its population to 5,000 from a population of only 1,500 twenty years earlier. The Wilmette Health Center (a free clinic) was founded that same year. Expansion during the 1920s Between 1900 and 1920 the village saw its population more than triple to 7,814. In 1922 the village adopted the "Plan of Wilmette," which outlined a vision for its future that included open spaces along Green Bay Road and the elevation of the railroad tracks to provide unobstructed flow of traffic between the east and west parts of the village. While few of these specific plans ever materialized, the 1922 plan represents the beginning of zoning as a mode of shaping the village's development. In 1919 the neighboring Village of Gross Point was dissolved due to bankruptcy. It was subsequently annexed by Wilmette, with one part being annexed in 1924 and the rest in 1926. In early 1924 the village issued a permit approving construction of its first apartment building, the Linden Crest Apartments at the intersection Fifth Street and Linden. This launched a controversy, and a "No Flats" campaign was held during the following year's election. Consequentially, very few apartment buildings would be constructed in the village for the next four decades. The oldest surviving Bahá'í House of Worship began construction in 1920 (it would not be completed until 1953). See "Attractions" below. Across Sheridan Road from the Bahá'í property, Wilmette Harbor experienced a plethora of changes in the twenties. The Sheridan Shore Yacht Club opened in Wilmette Harbor during the 1920s. The club was housed in a space on the lower floor of the Marshall mansion (architect Benjamin Marshall's opulent residence and studio), which sat along Sheridan Road on the south side of the harbor. Marshall had allowed the club to be located in his mansion as a compromise with the village. The village had previously been unwilling to rezone the property to permit him to house his commercial offices there. As a result, Marshall had been unable to