<i>π</i>p elastic scattering from 67 to 139 MeV

Measurements of ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$p elastic differential cross sections have been made at seven incident pion energies from 66.8 to 138.8 MeV. These measurements have statistical accuracy of 1.5--3.3?for ${\ensuremath{\pi}}^{+}$ and 2.7--19.0?for ${\ensuremath{\pi}}^{\mathrm{\ensuremath{-}}}$. The absolute normalization uncertainties are 1.2--2.5?for ${\ensuremath{\pi}}^{+}$ and 1.2--3.2?for ${\ensuremath{\pi}}^{\mathrm{\ensuremath{-}}}$. Extensive tests were made to ensure that systematic errors were properly evaluated.