Reprints of slide rule instructions, for the use of collectors, educators and students. All ephemera is currently archived in the International Slide Rule Museum Library. Instruction manuals, for the most part, are no longer available, Slide rule production ended in the mid 1970's and instruction manuals have deteriorated and are rapidly disappearing over time. The slide rule models themselves , now considered vintage math instruments, are still in abundance, and in the hands of private collections, museums, and many family homes. These volumes, organized by manufacturers, provide instructions for the most popular models, as well as some special designs. The scans from the faded and wrinkled manuals, have been "restored" digitally in order improve their clarity to provide decent black printing on white pages. All "noise", speckles, staple marks, etc., have been cleaned off the original scans, to improve the reader's experience. Where required, as in this volume, permissions have been obtained from manufacturers that are still in existence. Instruction Books Contained in Volume 5 Book 1 – Mannheim and Multiplex Slide Rules by L.W. Rosenthal, 1909-1911, 61 pages Book 2 – The Maniphase Slide Rule, 1928, 82 pages. Book 3 – How To Use a Slide Rule, 1942, 18 pages. Book 4 – The Atlas Circular Slide Rule, Made by Gilson, 1938, 9 pages. Book 5 – The Binary Circular Slide Rule, Made by Gilson, 1938, 17 pages. Book 6 – Decimal Trig Type Log Log Slide Rule, c1956, 119 pages. Book 7 – IInstructions for Maniphase Slide Rule (Roos Company), cWWII,c1956, 16 pages. Book 8 – Maniphase Multiplex Duplex Type Metal Style M, 1959, 25 pages Book 9 – Redi-Rule No. 1771 Pocket Slide , 1959, 15 pages Book 10 – Vector Type Log Log Slide Rule, , 1959, 159 pages