The asymmetries In forward n-N, n-A, and K+-(A + 2 ) photoproductlon have been measured w~t h a 16-GeV linearly polarized beam The experimental method and the procedures for extracting cross sectlons and asymmetries from the data are dlscussed In detall Information on the energy and momentum-transfer dependence of cross sectlons for natural-and unnatural-parity exchange, interference between exchanges of opposlte G panty, and vector-meson dominance is obtalned and dlscussed.