Wikisage, the free encyclopedia of the second generation, is digital heritage
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The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Publishing (2 members)
- Puerto Rico (1 member)
- Purim foods (1 member)
- RADA Gold Medal winners (1 member)
- Radio personalities from Denver (1 member)
- Rail transport (4 members)
- Rail transport films (1 member)
- Rail transport in Sydney (4 members)
- Rail transport stations opened in 1862 (1 member)
- Railway lines closed in 2018 (1 member)
- Railway lines in Sydney (1 member)
- Railway lines opened in 1911 (1 member)
- Railway lines opened in 1998 (1 member)
- Railway lines opened in 2009 (1 member)
- Railway stations in Sydney (15 members)
- Railway stations opened in 1855 (1 member)
- Railway stations opened in 1878 (1 member)
- Railway stations opened in 1884 (1 member)
- Railway stations opened in 1886 (1 member)
- Railway stations opened in 1890 (2 members)
- Railway stations opened in 1893 (2 members)
- Railway stations opened in 1899 (1 member)
- Railway stations opened in 1906 (1 member)
- Railway stations opened in 1932 (2 members)
- Railway stations opened in 2009 (3 members)
- Railway stations opened in 2019 (8 members)
- Rare disease (2 members)
- Rare diseases (1 member)
- Reality (1 member)
- Receptor modulators (1 member)
- Recreation (1 member)
- References with ISBN code (1 member)
- Regional theatre in the United States (1 member)
- Religion (2 members)
- Religion and science (1 member)
- Religious organizations (1 member)
- Research (13 members)
- Research initiatives (1 member)
- Residents of Oak Park, Illinois (7 members)
- Resorts in Nevada (3 members)
- Retroviruses (1 member)
- Rheumatology (0 members)
- Road accident deaths in Texas (1 member)
- Rock and Roll Hall of Fame inductees (1 member)
- Rock music groups (1 member)
- Roman Catholic priests (1 member)
- Roman sword (1 member)
- Rotfrontkämpferbund members (1 member)
- Royal Conservatory of Brussels alumni (1 member)
- Royal Conservatory of Brussels faculty (1 member)