Dublin Metropolitan Police Document

"This is a chit from the Dublin Metropolitan Police for my Great Grandfather to pass through the streets of Dublin in the aftermath of 1916 (he chose the week of the rising to move from Bachelors Walk to Leeson St. where his practice was subsequently based for over 50 years, becoming Ireland’s largest engineering firm). In fact, the current Irish Water upgrades are in many cases, the first major upgrades since PH McCarthy (my Great Grandfather) or PJ McCarthy (my Grandfather) were involved in putting in our first sanitation and potable water systems. "