| A merchant prince of the copper country : one immigrant's American success story | Mulligan, William H. | Article in Journal | | 2004 |
| Antiquarian, academic or practical? Geologic knowledge in nineteenth-century Ireland | Mulligan, William H. | Article in Book | | 2016 |
| Building new lives, maintaining old identities: Irish Associations in Michigan's Copper Country, 1860-1900 | Mulligan, William H., Jr | Article in Journal | | 2015 |
| Completing the ethnic mosaic : Irish miners in the Upper Peninsula | Mulligan, William H. | Article in Journal | | 2004 |
| From the Beara to the Keweenaw : the migration of Irish miners from Allihies, County Cork to the Keweenaw Peninsula, Michigan, USA, 1845-1880 | Mulligan, William H. | Article in Journal | | 2001 |
| From the Emerald Isle to the Copper Island : the Irish in the Michigan Copper Country, 1845-1920 | Mulligan, William H. | Article in Journal | | 2004 |
| Irish immigrants in Michigan's copper country : assimilation on a northern frontier | Mulligan, William H. | Article in Journal | | 2001 |
| Irish immigrants in the early Keweenaw mines : a research note | Mulligan, William H. | Article in Journal | | 2000 |
| The Irish Diaspora : the larger context | Mulligan, William H. | Article in Journal | | 2006 |
| Through a different lens : the Irish landscape as seen by mining promoters, 1835-80 | Mulligan, William H., Jr. | Article in Book | | 2008 |