Interactions of neutrons with aluminum have been studied by measuring $\ensuremath{\gamma}$-ray-production cross sections. Spectra were obtained for incident mean neutron energies ${E}_{n}=5.35, 5.85, 6.4, 6.9, 7.45, 7.95, 8.5, \mathrm{and} 9.0$ MeV. The $\ensuremath{\gamma}$ rays were detected using a coaxial Ge(Li) detector of 30-${\mathrm{cm}}^{3}$ active volume. Data were obtained for $\ensuremath{\gamma}$-ray scattering angles of 55\ifmmode^\circ\else\textdegree\fi{} for all ${E}_{n}$, 90\ifmmode^\circ\else\textdegree\fi{} for all ${E}_{n}$ except 5.35 MeV, and 75\ifmmode^\circ\else\textdegree\fi{} for ${E}_{n}=6.4 \mathrm{and} 7.45$ MeV. Time of flight was used with the detector to discriminate against pulses due to neutrons and background radiation. Absolute cross sections for production of $\ensuremath{\gamma}$ rays were obtained for the incident neutron energies quoted above. The cross sections have been compared, where possible, with previous measurements with good agreement. The spectra were studied for $\ensuremath{\gamma}$ rays which could be associated with deexcitation of nuclear levels having unknown decay modes. $\ensuremath{\gamma}$ rays were found having energies appropriate for ground-state decay of levels at excitation energies ${E}_{x}=5.155, 5.414, 5.434, 6.514, 6.821, 6.956, 7.920, 7.411, 7.471, 7.56 (\mathrm{doublet}), 7.655, 8.148, \mathrm{and} 8.184$ MeV.