Vol. 2 has title: Working Americans, 1880-1999: The middle class
Vol. 3 has title: Working Americans, 1880-1999: The upper class
Vol. 4 has title: Working Americans, 1880-1999: Their children
Vol. 5 has title: Working Americans, 1880-2003
Vol. 6 has title: Working Americans, 1810-2015
Vol. 7 has title: Working Americans, 1880-2006: Social movements
Vol. 8 has title: Working Americans, 1880-2007: Immigrants
Vol. 9 has title: Working Americans, 1770-1869: From the Revolutionary War to the Civil War
Vol. 10 has title: Working Americans, 1880-2009: Sports & recreation
Vol. 11 has title: Working Americans, 1880-2010: Inventors & entrepreneurs
Vol. 12 has title: Working Americans, 1880-2011: Our history through music
Vol. 13 has title: Working Americans, 1880-2012: Educators & education
Vol. 14 has title: Working Americans, 1898-2016: African Americans
Vol. 15 has title: Working Americans, 1880-2018: Politics & politicians
Vol. 16 has title: Working Americans, 1798-2020: Farming & raching
Vol. 17 has title: Working Americans, 1900-2021: Teens in America
Vol. 18 has title: Working Americans, 1880-2022: Health care workers
Vol. 19 has title: Working Americans, 1880-2022: The performing arts