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This paper examines a subset of objects from the USNO-B1 catalogue withlisted proper motions between 1.0 and 5.0 arcseconds per year. We look at thedegree of contamination within this range of proper motions, and point out themajor sources of spurious high proper motion objects. Roughly 0.1% of theobjects in the USNO-B1 catalogue with listed motions between 1.0 and 5.0arcseconds per year are real. Comparison with the revised version of Luyten'sHalf Second catalogue indicates that USNO-B1 is only about 47% complete forstars in this range. Preliminary studies indicate that there may be a dip incompleteness in USNO-B1 for objects with motions near 0.1 arcseconds per year.We also present two new stars with motions between 1.0 and 5.0 arcseconds peryear, 36 new stars with confirmed motions between 0.1 and 1.0 arcseconds peryear, several new common proper motion pairs, and the recovery of LHS237a(VBs3).Comment: 42 pages, 16 figures, uses AASTeX v5.2, accepted by A

Stars in the USNO-B1 Catalog with Proper Motions between 1.0 and 5.0 Arcseconds per Year