35 Pa. Stat. § 1801
On or before the first day of January, one thousand nine hundred and forty, and during the month of December, of the year one thousand nine hundred and thirty-nine and of each year thereafter, every alien, eighteen (18) years or over, residing in this Commonwealth, who is not a father or mother of a son or daughter who has served in the service of the United States during any war, or who has not filed an application declaring his or her intention to become an American citizen, or who, having filed such application, shall not have become naturalized within a period of three years thereafter, except such aliens who have resided continuously in the United States since December thirty-first, one thousand nine hundred and eight, and who have never been convicted of any criminal offence in any court of record, shall register with the Department of Labor and Industry, on forms to be prescribed and furnished by the department; and every such alien becoming a resident of this Commonwealth after the first day of January, one thousand nine hundred and forty, shall, in like manner, register with the department within thirty days after becoming such resident. Such registration shall show the name, age, address, occupation, name of employer, characteristics of appearance, name of wife or husband, if any, of such alien member, names and ages of all children under eighteen (18) residing with him or her, and, if not his or her own, the names of their parents, and such other information and details as the department shall direct.
35 P.S. § 1801