| An Ulster labourist in Liberal Scotland : William Walker and the Leith Burghs election of 1910 | Purdie, Bob | Article in Book | | 1994 |
| Centenary article. 1907: a titanic year for Belfast labour | O'Connor, Emmet | Article in Journal | | 2007 |
| Ulster political lives, 1886–1921 | | Monograph or Collective Volume | Royal Irish Academy | 2016 |
| William Walker | Boyle, J. W. (John William) | Article in Book | | 1966 |
| William Walker : social activism and Belfast labourism | Mecham, Michael | Thesis | | |
| William Walker : social activist and Belfast labourist | Mecham, Michael | Article in Journal | | 2018 |
| William Walker – A Connolly for Unionists? | O'Connor, Emmet | Article in Book | | 2017 |
| William Walker, 1870-1918, Belfast labour unionist : centenary essays | Walker, William | Monograph or Collective Volume | Umskin Press | 2018 |
| William Walker, Irish labour and 'Chinese slavery' in South Africa, 1904-6 | O'Connor, Emmet | Article in Journal | | 2010 |
| William Walker, labour, sectarianism and the union, 1894-1912 | Patterson, Henry | Article in Book | | 2005 |