<p>Hobos were very different from the homeless of today, according to Todd DePastino, a Pittsburgh historian and professor at Waynesburg College's Southpointe branch.</p>
<p>DePastino will discuss the subject in a free lecture on his book "Citizen Hobo: How a Century of Homelessness Shaped America," 6 p.m. Monday at the Hilton Garden Inn at Southpointe.</p>