PBS
Pbs: American Experience: Panama Canal
Regarded as one of the seven wonders of the modern world, the Panama Canal opened for business on August 15, 1914. America's ingenuity and innovation had triumphed over insurmountable odds. PBS brings us this incredible story via online...
University of St. Andrews (UK)
University of St. Andrews: Mathematics Archive: John Wallis
This page provides an excellent biography of John Wallis, an English clergyman, mathematician, and philosopher. Discusses his childhood, education, travel, studies, and his contributions to the fields of philosophy, language, and...