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 6: Book 1 – Instructions for the use of RELAY Bamboo Electric Slide Rule. 23 pages. Book 2 – Instructions for using Duplex Log Log Duplex slide rule. Generic. Supplied with some FUJI models. 22 pages. Book 3 – Jakar Precision Slide Rules (Made by FUJI), 22 pages. For 5 inch and 10 inch models, Rietz, Damstadt, Log/Log Electro and Duplex models. Book 4 – Lafayette Electronics Bamboo Slide Rules, Model F428 and F-681 Duplex Decitrig. 39 pages. Book 5 – Lafayette Electronics Bamboo Slide Rules, Model 99-7128 Communication Slide Rule. 26 pages. Book 6 – Lafayette Electronics Bamboo Slide Rules, Model F-686, 99-7102 Duplex Vector Log Slide Rule. 19 pages. Book 7 – Instructions For The Use of Your LUTZ Slide Rule. Models No. 151. 153, 252 and 551. 39 pages. (Matches Ricoh model numbers.) Book 8 – Pages 201-235Olson Electronics. Instructions For TL-472 Electro 10” Bamboo Slide Rule. Book 9 – Pages 236-270SANS & STREIFFE Bamboo Duplex Slide Rules. Instructions For General Calculation. 33 pages Book 10 – MICRONTA (Radio Shack) Bamboo Slide Rules. Instructions For General Calculation. 31 pages Book 11 – SIC (Scientific Instruments) Professional Slide Rule. Simplex and Duplex Models No. 4030, 4500, 5050, 5500, 1020 and 1050. 33 pages. Book 12 – SIC (Scientific Instruments) Professional Slide Rule. Duplex Model No. 1570 Electro Vector Log Log. 21 pages. Book 13 – SIC (Scientific Instruments) Professional Slide Rule. Model No. 1580 Vector Log Log Decitrig Electric. 23 pages. Book 14 – SIC (Scientific Instruments) Sliding Disk. No. 130. 19 pages. Book 15 – Fullerton Circular Slide Rule. No. 1450. (Concise 28). 10 pages.Book 16 – SIC (Scientific Instruments) Professional Slide Rule. Model No. 1610 Circular Log Log. 21 pages. Book 17 – Concise Circular Slide Rule. No. 270 and 300. 20 pages. Book 18 – Concise Conversion Tables and Circular Slide Rule. Model CTCS-552 by Sama & Etani. 11 pages. Book 19 – Concise Conversion Tables and Circular Slide Rule. Model EE-112 by Sama & Etani. 18 pages. Book 20 – Sama & Etani Reference Tables and Circular Slide Rule. Model 600-ST Inserts. 22 pages. Book 21 – Technical Sales (of UK, made by Uchido Yoko, Co). Instructions for TS Emblem Series. 34 pages.