by E.Radlauer and R.S.Radlauer;illustrated with photographs by the authors by C.W. Harrison; illustrated with photographs by the author Harriet E. Huntington; illustrated with photographs by the author by Alan Mark Fletcher with photographs by the author by Emma-Lindsay Squier; illustrated with photographs by John Bransby Peter and Elaine Larsen; illustrated with photographs by Peter Larsen Peter and Elaine Larsen; illustrated with photographs by Peter Larson by Edna Mason Kaula; illustrated with photographs by Frank Ross; illustrated with photographs and diagrams by Ira M. Freeman;illustrated with photographs and diagrams