When the street sign said Boulton, I knew I was near the right address. Soon another familiar street name popped up — Atwood — and I was squarely in Bel Air’s Howard Park, a subdivision created out of the orchards surrounding a noteworthy Baltimorean’s summer home.Its formal name is Liriodendron, and it is a Harford County treasure. It was built by one of the Johns Hopkins Hospital’s fabled “Big Four,” Dr. Howard Atwood Kelly. Kelly spent most of the year at 1406 E… (View original article)