A natural carbon target was bombarded by protons in the energy range Ep = 9 to 24 MeV (Ex = 10 to 24 MeV in 13N). High-energy γ rays were detected in a NaI crystal oriented at 90° to the beam direction. Excitation functions were obtained for the 12.71 and 15.11 MeV γ rays from inelastic scattering on 12C and for capture γ rays from the reaction 12C(p, γo)13N. New structure is reported for all these reactions.