Alvin Fernald, possessor of the Magnificent Brain, strikes again this time causing citywide repercussions with his one-day administration as Mayor of Riverton. Author Clifford B. Hicks teams our hero with Speedy Glomitz, the only kid who has ever offered Alvin any competition in the brain department. With Speedy's help, Alvin wins the opportunity to be Mayor of Riverton for one day. Alvin and his friends discover the virtue of teamwork, and in a wild Alvinish climax, foil the villains and even institute a few needed civic improvements. Boys and girls will enjoy this amusing, fast-paced story, which was first published in 1970, and peppered with the original comic illustrations from Bill Sokol.