Dr. Harald Osel works in the global oil and gas industry and has written four remarkably detailed volumes on the industry he knows and loves. We designed covers for all four volumes of his magnum opus and typeset the text. Every aspect from exploration to extraction and transport is covered, along with issues of environmental preservation and clean energy. Published by Aurora Publishing. We maintained common design elements for al four covers and used images that reflected the topic covered by the specific volume. Typeface used on the covers: Proxima Nova (various weights and widths).