Don't forget that in addition to coal mining, many of Slavic background worked in limestone quarries in central PA, around Altoona. The census for Blair Co. in 1900 shows entire pages of various groups...one page is Hungarian, one page Croatian, one page Austrian, one page Serbian, etc. Mostly rows of boarding houses. The wife ran the boarding house and the husband and several children and a couple of single male boarders lived there. There is an entire page (I think it was like a dorm) of Italians, all working on the railroad. You can almost picture the town laid out in rows, each block or two its own little ethnic world. And of course there were the steel mills in PA and Ohio......FYI look at the census for 1900 for the north side of Youngstown, OH, the area around Brier Hill, and there are pages of Eastern Europeans working in the steel mill. In 1910 in the same area you see a house or two, a boarding house sprinkled here and there, and the ethnic backgrounds are mixing more, but still laborers. By 1920 you see primarily single family homes, and lots of mix, in both ethnicity and occupations. Jewelers, storekeepers, policemen, all living in the same neighborhood as the laborers. My mom would tease us kids... when we came downstairs with some thrown together outfit (I was born in 1948, so this is "pre-hippie" days), she'd tell us we looked like DPs. And if we pulled some real boner, she call us a dumb Bo-Hunk. It was always in fun, and we knew it was just teasing. And it was always kept in the family, never before outsiders or in public. And if we whined about our chores, dear mom, who couldn't sing a note, would stand there and sing "Oy Marishka pegla, pegla, pegla, pegla" (Poor Maria irons, irons, irons, irons) and didn't stop until we got to work. We moved fast! Bozo is pronounced Bozho, with the soft z sound ...I have a distant cousin in Zadar and that is how he pronounces his name. Emphasis on the first syllable.