Spectra of backscattered radiation from semi-infinite slabs of paraffin, aluminum, iron, tin, and lead were measured by means of a scintillation spectrometer, as a function of the measuring angle θ, which is the angle between the normal to the plane face of the slabs and the detector axis. The point gamma sources of Co60 and Cs137 were placed in close contact with the scattering slabs. By using this geometry the measurement was performed without perturbing effects produced by detector or source collimating shields. The energy and number albedos, the angular distributions of scattered energy and number of photons, and the energy distributions are given for each combination of gamma source and scatterer.