The highly energetic electron environment in the inner magnetosphere (geosynchronous orbit and inward) has received a lot of interest recently, as it becomes increasingly evident that existing statistical models such as AE-8 do not capture the range of environmental conditions that exist nor their variability over periods of a solar cycle. Understanding this environment has obvious engineering applications to systems designed to fly in geosynchronous and medium Earth orbits. The detailed understanding of the physics governing the dynamics of highly energetic electrons is a further topic of active research that will eventually lead to global physics-based models capable of now casting or forecasting this environment. For both the development of new statistical models and for the research into the dynamics of highly energetic electrons, the availability of global, well-intercalibrated data is of fundamental importance. We currently have a wealth of inner magnetospheric energetic electron data. This paper presents the current state of the art of intercalibrating data from the CRRES, Los Alamos National Laboratory (LANL) GPS, and LANL geosynchronous and Polar energetic electron instruments, covering the period of 1976 to the present (three full solar cycles).