The collection consists of photostats of documents collected by Minard regarding a state boundary case argued before the U.S. Supreme Court, October term, 1929, in which New Jersey was the plaintiff and Delaware the defendant. The collection contains copies of documents going back to the reign of King Charles II of Great Britain, which were placed in evidence to determine where in the Delaware River and Bay the exact division of territory between the two states lay. There are deeds, petitions, reports, minutes, river charts, and maps used to support the claims of both parties.