Clockwork Universe: Steampunk vs. Aliens by Patricia Bray, Joshua Palmatier, Bradley P. Beaulieu, S.C. Butler, Leah R. Cutter, David J. Fortier, Brad Hafford, J.R. Hargenrader, Gini Koch, Gail Z. Martin, Larry N. Martin, Seanan McGuire, Jason Palmatier, C.B. Pratt, Tansy Rayner Roberts, Ian Tregillis, Jean Marie Ward