An Experiment with Time by J. W. Dunne
J.W. Dunne (1866-1949) was an accomplished English aeronautical engineer and a designer of Britian's early military aircraft. His An Experiment with Time, first published in 1927, sparked a great deal of scientific interest in--and controversy about--his new model of multidimensional time.
Faber and Faber, 1958.
Softcover. Very good.