Municipal officials in 40 states are today coöperating with one another through leagues of municipalities to provide means whereby they may bring the needs of the urban population to the attention of their state legislators and inform themselves as to most efficient practice in the field of public business. These leagues include some 7,000 municipalities as league members, and many more are using league services. The first league was organized 46 years ago, the fortieth in February, 1937. The degree of service, of course, varies as between leagues, owing to differences in strength and financial ability. A few have little more than an annual meeting and limited legislative work. Most leagues, however, carry on a wide range of services such as training schools for city employees, complete information exchange, legislative counsel, monthly magazine, radio programs, legal services, regional meetings, and an annual convention of several days' duration.