  We describe the results of a radio continuum survey of the central 4x1deg
with the 100 m Green Bank Telescope (GBT) at wavelengths of 3.5, 6, 20, and 90
cm. The 3.5 and 6 cm surveys are the most sensitive and highest resolution
single dish surveys made of the central degrees of our Galaxy. We present
catalogs of compact and extended sources in the central four degrees of our
Galaxy, including detailed spectral index studies of all sources. The analysis
covers star-forming regions such as Sgr B and Sgr C where we find evidence of a
mixture of thermal and nonthermal emission. The analysis quantifies the
relative contribution of thermal and nonthermal processes to the radio
continuum flux density toward the GC region. In the central 4x1deg of the GC,
the thermal and nonthermal flux fractions for all compact and diffuse sources
are 28%/72% at 3.5 cm and 19%/81% at 6 cm. The total flux densities from these
sources are 783+-52 Jy and 1063+-93 Jy at 3.5 and 6 cm, respectively, excluding
the contribution of Galactic synchrotron emission.
