Monthly report for October 1998 by Christian A. Hummel: CAH attended the interferometry workshop in Flagstaff during the first week in October. He gave three talks on data reduction, modeling, imaging, and results of NPOI observations. CAH, upon release of the NPOI observation awards and in his function of NPOI scheduler, has completed the first set of observing lists and mailed out information to observers. CAH obtained a preliminary orbit of the wide pair in the triple system Xi Tauri. Observations are planned to detect the wobble of the close pair.