- In this article about a 'real-world' entity, any non-mentioned material is shown in italics and is provided from Wikipedia. In his Foreword to Rasputin Must Die!, Brandon Hodge states that the Earth portrayed in that adventure 'has to be our world', so we can extrapolate a little to give context in order to aid DMs and complete our infoboxes. Further information may be found by following the link to Wikipedia provided.
- Adam Daigle and Brandon Hodge. (2013). Guns, Spirits, and Revolution. Rasputin Must Die!, p. 64. Paizo Publishing, LLC. ISBN 978-1-60125-496-2
- Aasen mortar (real-world mortar) on Wikipedia