Denis Pellerin is a photo-historian, photographer and author with a passion for stereo photography. He graduated with an MA in Art History from the Sorbonne and has been researching the history of stereo photography for over 40 years. He has written many articles and books on the subject, both in French and English and travels widely giving talks on all aspects of the history of stereo photography. During his 30th year as a secondary schoolteacher, Denis had the good fortune to meet and work with Dr Brian May before being hired by the latter as the curator of his extensive photographic collection. Denis has co-authored three previous books with Brian: Diableries: Stereoscopic Adventures in Hell (2013), The Poor Man's Picture Gallery (2014), and Crinoline: Fashion's Most Magnificent Disaster (2016). He is deeply involved in various activities of The London Stereoscopic Company, and is the Archivist for the recently established Brian May Archive of Stereoscopy.

Brian May CBE, PhD, ARCS, FRAS, is a founding member of the rock group Queen, a world-renowned guitarist, songwriter, producer and performer, authority on 3-D stereoscopic photography, a passionate campaigner for animal rights and welfare, and an advocate for political and social change. His PhD thesis A Survey of Radial Velocities in the Zodiacal Dust Cloud was published in 2007, and he is the co-author of eight books on astronomy, space, and historical stereo photography, and the solo author and photographer of the bestselling book on the history of his own band: Queen in 3-D, published in 2017. Brian was Chancellor of Liverpool John Moores University 2008-13, has received three Honorary Doctorates and holds the post of visiting researcher at Imperial College. Asteroid 52665 Brianmay was named in his honor, and in 2015 he was appointed Science Team Collaborator for NASA New Horizons mission, assembling the first ever stereo images of Pluto. Brian is currently engaged in many other collaborations with NASA, ESA and JAXA, producing stereo images of solar system objects.