The Michelson-Morley Interferometer experiment is commonly cited as experimental validation of Special Relativity. While Michelson and Morley concluded an Earth Orbital Velocity (EOV) of 5 to 7.5 km/s, their result is generally accepted as 0 km/s, with their observation attributed to experimental error. Here we find three specific problems in the Michelson-Morley analysis, principal of which is the recognition that their expected result equation does not mathematically compensate for interacting frequencies as governed by the superposition of waves principle. Once the expected result equation is corrected, their data is reevaluated to reveal an EOV of approximately 30 km/s, which was their expected result. This finding is confirmed by reanalyzing Miller?s 1933 repeat Interferometer experiment, also revealing an EOV of 30 km/s. These experimental findings support the presumption of an electromagnetic wave medium and challenge the validity of Special Relativity.