His first general survey of York was carried out in 1899 and published in 1901. He used one full-time investigator who made house-to-house visits, and relief too, on information from clergymen, teachers and voluntary workers. He was focusing on the working classes in York, whom he defined as those families where the head of the household was a wage earner and no servants were employed. Altogether, over 11000 households were visited (almost all wage earning households in York) and information obtained from over 45000 people, exactly 2/3 of York's population.