Random Reminiscences of Men and Events By: John D. Rockefeller

Records of a Family of Engineers By: Robert Louis Stevenson

Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan By: William Alvin Clemens

Reel Life Films By: Sam Merwin

Reflections on the Decline of Science in England By: Charles Babbage

Regeneration By: Katherine MacLean

Religion and Lust or, The Psychical Correlation of Religious Emotion and Sexual Desire By: James Weir

Reluctant Genius By: Henry Slesar

Remarks Concerning Stones Said to Have Fallen from the Clouds, Both in These Days, and in Antient Times By: Edward King

Remarks on the Subject of Lactation By: Edward Morton

Remember the Alamo! By: T. R. Fehrenbach

Report of the Committee of Inquiry into the Various Aspects of the Problem of Abortion in New Zealand By: New Zealand Committee

Report of the Juvenile Delinquency Committee By: R. M. (Ronald Macmillan) Algie

Report of the Knaresbrough Rail-way Committee By: England) Knaresbrough Rail-Way Committee (Knaresborough

Report of the Railway Department of the Board of Trade on the London, Worcester, and Wolverhampton, and on the Birmingham and Shrewsbury Districts By: Great Britain. Board of Trade. Railway Dept.

Report of the Special Committee on Moral Delinquency in Children and Adolescents By: New Zealand. Special Committee on Moral Delinquency in Children and Adolescents

Report on Surgery to the Santa Clara County Medical Society By: Joseph Bradford Cox

Republic (version 2) By: Plato (Πλάτων)

Rescue Squad By: Thomas J. O'Hara

Researches on Cellulose 1895-1900 By: C. F. (Charles Frederick) Cross

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man By: Thorne M. (Thorne Martin) Carpenter

Response in the Living and Non-Living By: Jagadis Chandra Bose

Resurrection By: Robert Shea

Return-Loads Bureaus To Save Waste In Transportation By: United States. Council of National Defense. Highways Transport Committee

Revenge By: Arthur Porges

Revolted Woman By: Charles George Harper

Revolution By: Mack Reynolds

Rex Ex Machina By: Frederic Max

Rip Foster in Ride the Gray Planet By: Harold L. Goodwin

Rip Foster Rides the Gray Planet By: Harold L. Goodwin

Robur the Conqueror By: Jules Verne

Rollo's Experiments By: Jacob Abbott

Rollo's Museum By: Jacob Abbott

Rollo's Philosophy. [Air] By: Jacob Abbott

Runaway By: Joseph Samachson

Rural Hygiene By: Henry N. (Henry Neely) Ogden

Rural Problems of Today By: Ernest R. (Ernest Rutherford) Groves

Sabotage in Space By: Carey Rockwell

Salvage in Space By: Jack Williamson

Sand Doom By: Murray Leinster

Sane Sex Life and Sane Sex Living Some Things That All Sane People Ought to Know About Sex Nature and Sex Functioning; Its Place in the Economy of Life, Its Proper Training and Righteous Exercise By: H. W. (Harland William) Long

Sanitary and Social Lectures, etc By: Charles Kingsley

Satellite System By: Horace Brown Fyfe

Save the Girls By: Mason Long

Say "Hello" for Me By: Frank W. Coggins

Science - History of the Universe Vol. 1: Astronomy By: Francis Rolt-Wheeler

Science and Morals and Other Essays By: Bertram Coghill Alan Windle

Scouting For Girls, Official Handbook of the Girl Scouts By: Girl Scouts of the United States of America

Scrimshaw By: Murray Leinster

Searchlights on Health: Light on Dark Corners A Complete Sexual Science and a Guide to Purity and Physical Manhood, Advice To Maiden, Wife, And Mother, Love, Courtship, And Marriage By: B. G. (Benjamin Grant) Jefferis

Second Landing By: Floyd L. Wallace

Second Shetland Truck System Report By: William Guthrie

Second Sight By: Basil Wells

Second Sight By: Alan Edward Nourse

Second Treatise of Government By: John Locke

Secret Band of Brothers A Full and True Exposition of All the Various Crimes By: J. H. (Jonathan Harrington) Green

Secret of Everyday Things By: Jean-Henri Fabre

Secret Societies And Subversive Movements By: Nesta Helen Webster

Secrets of the Woods By: William Joseph Long

Security By: Ernest M. Kenyon

See? By: Edward G. Robles

Seed Dispersal By: William J. Beal

Select Temperance Tracts By: American Tract Society

Selection of 19th Century Scientific Verse By: Various

Self Mastery Through Conscious Autosuggestion By: Emile Coué

Sense from Thought Divide By: Mark Clifton

Service with a Smile By: Charles Louis Fontenay

Seventeen Species of Bats Recorded from Barro Colorado Island, Panama Canal Zone By: William B. Jackson

Sex--The Unknown Quantity The Spiritual Function of Sex By: Alexander J. (Alexander James) McIvor-Tyndall

Sexes in Science and History By: Eliza Burt Gamble

She Stands Accused By: Victor MacClure

Shepherd of the Planets By: Alan Mattox

Shipwreck in the Sky By: Eando Binder

Shock Absorber By: E. G. von Wald

Show Business By: Boyd Ellanby

Side-Lights on Astronomy and Kindred Fields of Popular Science By: Simon Newcomb

Sidelights on Relativity By: Albert Einstein

Sight Gag By: Laurence M. Janifer

Sir Jagadis Chunder Bose His Life and Speeches By: Jagadis Chandra Bose

Sir William Herschel: His Life and Works By: Edward Singleton Holden

Six Lectures on Light Delivered In The United States In 1872-1873 By: John Tyndall

Sjambak By: Jack Vance

Sketches of the Natural History of Ceylon By: James Emerson Tennent

Skylark Three By: E. E. Smith

Slavery: What it was, what it has done, what it intends to do Speech of Hon. Cydnor B. Tompkins, of Ohio By: Cydnor Bailey Tompkins

Slaves of Mercury By: Nathan Schachner

Slingshot By: Irving W. Lande

Small World By: William F. Nolan

Social Life in the Insect World By: Jean-Henri Fabre

Social Rights and Duties, Volume I (of 2) Addresses to Ethical Societies By: Leslie Stephen

Solar Stiff By: Chas. A. Stopher

Solomon's Orbit By: William Carroll

Some Personal Recollections of Dr. Janeway By: James Bayard Clark

Some Spring Days in Iowa By: Frederick John Lazell

Some Summer Days in Iowa By: Frederick John Lazell

Some Winter Days in Iowa By: Frederick John Lazell

Song in a Minor Key By: Catherine L. Moore

Song of the Cardinal By: Gene Stratton-Porter

Sonny By: Rick Raphael

Sorry: Wrong Dimension By: Ross Rocklynne