A study of the inclusive production of K i, A, and in n-p interactions at 15 GeV/c is presented.Inclusive cross sections for single neutral strange particles and neutral-strange-particle pairs are given. Longitudinal-and transverse-momentum distributions of the produced particles are presented. The average charged multiplicities of the systems recoiling against the A and the K: are compared and the results analyzed in the framework of a simple model. The A polarization is found to be in good agreement with A production from other strangeness-nonannihilating processes. Pr6duction of A's in the target fragmentation region is studied in the framework of the triple-Regge-pole-exchange model. The cross section for inclusive Ka+(890) production has been measured as 1 9 5 k 3 5 pb, and the Zf(1385) inclusive cross section has been found to be 174f 25 p b The K"(890) and If(1385) differential cross sections as functions of rapidity and transverse momentum are presented and discussed.