The Wall in United States.

The United States holds more of the Berlin Wall than any country except Germany, and the reason is that it was sold there first. In January 1990 the GDR's trade company signed an exclusive American marketing deal with a New Jersey contractor, and the two segments carrying Kiddy Citny's heart were shipped to New York harbour for a launch event that February. Presidential libraries, corporate lobbies, university campuses and a Florida clay works all follow from that arrangement.

The catalogue has 116 researched records in 69 cities in the United States: 36 relocated segments, 27 museum displays and 17 memorials.

New York holds the most, with seven records. Between them the sources report 101 segments of wall. A licensed photograph illustrates 33 of them. Map positions are missing for seven of them: either no source supplied one, or the one supplied could not be right.

A further 35 listings for the United States are held in the catalogue as drafts, out of the map and the indexes until they have been researched.

Every record is labelled Reported: a credible source says the object is there, not that anyone has confirmed it in person. How claims are weighed is set out in the research methodology, and the reading room explains how the Wall came to be spread across places like this at all.