Hewitt-Sperry Automatic Airplane for eight years, and yet Sperry became intrigued with the concept of applying radio control to them. He realized that for radio control to be effective, automatic stabilization would be essential, so he decided to adapt his naval gyro-stabilizers (which he had developed for destroyers). In 1913, the Navy provided a flying boat to test and evaluate the gyro-based autopilot. Sperry's son Lawrence served as an engineer during the test phase. In 1914, Lawrence Sperry was in Europe and observed the developing techniques of aerial warfare, including the use of aircraft. In 1916, the two Sperrys joined Peter Hewitt, an
Church of the Holy Virgin Mary of Lourdes Church of the Holy Virgin Mary of Lourdes The Church of the Holy Virgin Mary of Lourdes () is a Roman Catholic church in Kraków, Poland, dedicated to Our Lady of Lourdes. It was founded by the Lazarists, and built in 1892–1894 at ul. Misjonarska 37 street in the district of Krowodrza. It has been a parish church since 1923. In interwar Poland, a polyphonic choir was established by the congregation in 1932. The Mariański Choir has attracted international acclaim for a number of years. The corner-stone for the construction of the church was laid on June 25, 1892, although