549 pages of 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. Civil and Industrial Engineering Instruction Books in Volume 19 Book 1 – Aristo Instructions for Use Surveyor 0958. Book 2 – Aristo Reel Data Calculator Nr. 40104. Book 3 – Aristo Universal Pocket Slide Rule “WIRE” Instructions 40128. Book 4 – Instructions for using the Axelson Factorule. Book 5 – Exposure Calculator for Gamma Radiography. British Steel castings. Book 6 – The Slide Rule for Calculations in the Timber & Building Industries. Classic. Book 7 – The Climatemaker Slide Rule for figuring heat losses from buildings. Book 8 – The Concise Stadia Computer and Circular Slide Rule. Book 9 – Brief Instructions Viscosity-Temperature Slide Rule.Faber-Castell for ESSO (Standard Oil). Book 10 – Faber-Castell Instructions Verlag-Chemie Chemical Slide Rule. Book 11 – Fisher Universal Valve Sizing Rule Instruction manual. Fisher Governor Company. Book 12 – How to use the Valve and Meter Slide Rule by Foxboro. English units. Book 13 – Sewer Design Slide Rule 1974 by Irving Goldfien. Book 14 – Gerber Variable Scale No. 368. Gerber Scientific Instrument Co. 1950. Book 15 – Hemmi No. 257 Slide Rule for Chemical Engineers. Book 16 – Hemmi No. 269 Slide Rule for Civil Engineers. Book 17 – K&E Surveyor's Duplex Slide Rule, No. 4102. Keuffel & Esser Co., NY. Book 18 – The Langsner Industrial Slide Rule. by A. Langsner, Eugene Dietzgen Co. Book 19 – Directions for the use of the Novatni Weight Slide Rule. Version 3. Book 20 – P.I.C. Helical Spring Slide Rule Type “A”. By Boardman and Litchfield. Book 21 – Pickett N15-T Georgia Iron Works (GIW) Hydraulic Slide Rule by T.W Hagler and D.W. Hagler. 1961. Book 22 – Brick and Tile Computing Slide Rule. W.H Pipkorn Company, Mitchell, Wisconsin. 1940. SR&SECo. Book 23 – Concrete Quantity Calculator Slide Rule, made by Slide Rule and Scale Engineering Company.. Book 24 – The Tarrant Hydraulic Slide Rule, Paterson Engineering Company Ltd., London, England. Book 25 – How to Use WAKCO Weight Slide Rule Model 1373-C, Part 1 & 2. Made by Pickett for Warren-Knight Co. Book 26 – The Winslow Strength Computing Slide Rule, 1931. Henry M. Tomlinson Co., Joliet, Illinois.