Airlords of Han By: Philip Francis Nowlan

Among the Trees at Elmridge By: Ella Rodman Church

Anatomy of Melancholy Volume 3 By: Robert Burton

Anatomy of Melancholy Volume 3 By: Robert Burton

Anything You Can Do! By: Randall Garrett

Apis Mellifica By: C. W. Wolf

Arm of the Law By: Harry Harrison

Auguste Comte and Positivism By: John Stuart Mill

Bacteria in Daily Life By: Grace Coleridge Frankland

Behavior of the Honey Bee in Pollen Collecting By: D. B. Casteel

Behavior of the Honey Bee in Pollen Collecting By: D. B. Casteel

Beyond Lies the Wub & The Skull By: Philip K. Dick

Bird Stories from Burroughs By: John Burroughs

Birds and Bees, Sharp Eyes, and Other Papers By: John Burroughs

Card Trick By: John Berryman

Chemical Phenomena in Life By: Frederick Czapek

Chronicles of Canada Volume 32 - The Railway Builders: A Chronicle of Overland Highways By: Oscar D. Skelton

Condition of the Working-Class in England in 1844 By: Friedrich Engels

Constructive Beekeeping By: Ed Clark

Creative Chemistry By: Edwin E. Slosson

Criminal Investigation: a Practical Handbook for Magistrates, Police Officers and Lawyers, Volume 1 By: Hans Gross

Danger! and Other Stories By: Sir Arthur Conan Doyle

Deportation Cases of 1919-1920 By: Constantine Panunzio

Deportation: Its Meaning and Menace. Last Message to the People of America By: Emma Goldman

Elements of Mammalogy By: William Ruschenberger

Elements of Ornithology By: William Ruschenberger

Emancipation Proclamation By: Abraham Lincoln

Enquiry Into The Causes Of The Late Increase Of Robbers By: Henry Fielding

Equation of Doom By: Gerald Vance

Essays on Work and Culture By: Hamilton Wright Mabie

Experiments and Observations on Different Kinds of Air By: Joseph Priestley

Experiments in Plant Hybridisation By: Gregor Mendel

Extermination of the American Bison By: William T. Hornaday

Failure of Initiative: Final Report of the Select Bipartisan Committee to Investigate the Preparation for and Response to Hurricane Katrina By: United States House of Representatives

Final Report from the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling By: National Comm. on the BP Deepwater Horizon Oil Spill

Fire People By: Ray Cummings

Five Lectures on Blindness By: Kate M. Foley

Flying Saucers are Real By: Donald Keyhoe

Food Guide for War Service at Home By: Frances Swain

Food Values By: Dr. Albert Philip Sy

Formation of Vegetable Moulds through the Action of Worms with Observations on their Habits By: Charles Darwin

Four Science Fiction Stories by G.L.Vandenburg By: G. L. Vandenburg

Galaxy Primes By: E. E. Smith

Gambler's World & The Yillian Way By: Keith Laumer

George Müller of Bristol By: Arthur T. Pierson

Gorgias By: Plato (Πλάτων)

Great Astronomers By: Robert Stawell Ball

Handbook of Nature-Study, Part 1 By: Anna Botsford Comstock

Happy Unfortunate By: Robert Silverberg

History of Chemistry, Volume II. From 1850-1910 By: Sir Thomas Edward Thorpe

Honeymoon in Space By: George Griffith

How to Do Chemical Tricks By: A. T. Anderson

How to Succeed By: Orison Swett Marden

Hunter Patrol By: H. Beam Piper and John McGuire

I Was a Teen-Age Secret Weapon By: Richard Sabia

In Times Like These By: Nellie McClung

Indian To-day By: Charles Alexander Eastman

Insect Stories By: Vernon Kellogg

Invaders from the Infinite By: John Wood Campbell. Jr.

Islands of Space By: John Wood Campbell. Jr.

Kari the Elephant By: Dhan Gopal Mukerji

Laws By: Plato

Life of the Fly, With Which are Interspersed Some Chapters of Autobiography By: Jean-Henri Fabre

Martyrs of Science, or, the Lives of Galileo, Tycho Brahe, and Kepler By: David Brewster

Mason-Bees By: Jean-Henri Fabre

Memory: How to Develop, Train and Use It By: William Walker Atkinson

National Geographic Magazine Vol. 01 No. 3 By: Various

National Geographic Magazine Vol. 01 No. 4 By: Various

Naudsonce By: H. Beam Piper

No Animal Food and Nutrition and Diet with Vegetable Recipes By: Rupert H. Wheldon

Null-ABC By: H. Beam Piper

On War By: Carl von Clausewitz

Organic Evolution By: Richard Swann Lull

Physics By: Aristotle

Police Your Planet By: Lester del Rey

Psychotherapy By: Hugo Münsterberg

Queer Little Folks By: Harriet Beecher Stowe

Raiders of the Universes By: Donald Wandrei

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

Republic (version 2) By: Plato (Πλάτων)

Revolted Woman By: Charles George Harper

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

Sabotage in Space By: Carey Rockwell

Salvage in Space By: Jack Williamson

Save the Girls By: Mason Long

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

Secret of Everyday Things By: Jean-Henri Fabre

Secrets of the Woods By: William Joseph Long

Selection of 19th Century Scientific Verse By: Various

Sexes in Science and History By: Eliza Burt Gamble

Sidelights on Relativity By: Albert Einstein

Skylark Three By: E. E. Smith

Song of the Cardinal By: Gene Stratton-Porter

Soul of London By: Ford Madox Ford

Southern Horrors: Lynch Law In All Its Phases By: Ida B. Wells-Barnett

Space Platform By: Murray Leinster

Stand by for Mars By: Carey Rockwell

Status Quo By: Dallas McCord Reynolds

Stories of Birds By: Lenore Elizabeth Mulets

Studies About Trees By: Jacob Joshua Levison