 (On the location of regions, see Casati and Varzi (1999: 123), who hold that regions are located at themselves, and Simons (2004b: 345), who holds that nothing is located at itself. On the location of sets, see Maddy (1990), Lewis (1991), Effingham (2010b; 2012), and Cook (2012). On the location of events, see Casati and Varzi (1999), Price (2007), Giordani and Costa (2013, 2016) and Costa (2017). On the location of portions of stuff, see Markosian (1998), (2004a), and (2015). On the location of holes and shadows, see Lewis and Lewis (1970), Casati and Varzi (1994), Wake, Spencer, and Fowler (2007), Donnelly, Bittner, and Rosse (2006), and Sorensen (2008). On the location of spirits, see Thomas (2009) and Inman (2017). Sanford (1970) discusses many of these topics, and Hudson (2005: 4) mentions many of them briefly.)