The production of the J/ip meson by photons 1 was observed almost immediately after its discovery in hadronic 2 and electron-positron 3 collisions. The early measurements 1 " 4 focused on the extraction of the ^-nucleon total cross section with use of the vector dominance model. More recently, there have been several attempts to describe # photoproduction by means of constituent models such as photon-gluon fusion. 5 We have studied the production of ip mesons by photons up to the highest available energy, 300 GeV, incident on both liquid hydrogen and deuterium targets. In particular, we measure, in open geometry, the reactions y+(p or d) -ip (JU + M* °r e+e~) + X.(1)The Fermilab broad-band photon beam struck a 41-cm liquid target. Noninteracting photons traversed the detector, and deposited their energy in an integrating quantameter. Forward-going dilepton final states were detected in a multiparticle spectrometer, consisting of two analyzing mag-edited by T. Kirk and H.