Flag of the President of the United States there are claims that a special flag was used during a trip by President Jackson to New York City in 1832, and a description of a "square, plain blue flag" used on a boat in the Brooklyn naval yard while transporting President Martin Van Buren on July 15, 1839. An 1848 British flag book by John William Norie, and also the 1853 "The Illustrated London Geography" by Joseph Guy, have similar illustrations of a flag labeled as being the U.S. president's flag. Neither book reveals any further information about this flag, and such a flag is not mentioned in the
Familiar stranger and evenly distributed. This indicates that person's familiar stranger network can quickly stretch an entire metropolitan area. Wi-Fi usage data for university campuses have provided additional datasets for analyzing familiar strangers. These datasets have yielded similar results as the bus usage data, but the researchers divided relationships based on regularity of interaction and closeness of relationship. Familiar stranger relationships develop in a predictable manner. They depend on regularity, on-going contact, and public spaces. Online social networks are ubiquitous today. But in these digital contexts, it is unclear what defines a familiar stranger relationship. An initial definition put forward has been