Statistical analysis of about 500 passport applications by naturalised Americans (or their relatives) who were born in Leitrim. Though useful only for a brief period, this offers the only systematic documentation of ‘returned Yanks’ intending to make short visits, most of whom came back without children and therefore cannot be identified in the Irish census. Many applications are collated with Irish census returns to establish the origins of applicants from Leitrim, generating a profile similar to that presented in the . In addition to biographical variables, the applications permit analysis of the height and appearance of visitors, which in the case of height may be compared with measurements of the home population (Leitrim female visitors in particular were unusually tall). Comparisons are made with the findings and measurements of Harvard ethnographers who surveyed Leitrim in the mid-1930s.