Manual written to accompany the Microcraft Microscope Set No. 310 for the amateur microscopist. Includes instructions for using the microscope and accessories, as well as a range of experiments and recommendations for…

General view of an exhibition display for the National 4-H Entomology Program sponsored by the Hercules Powder Company.

Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder Company (later…

Manual written to accompany the Gilbert Chemistry Outfit No. 7 chemistry set for middle to high school-age students, especially boys. Includes instructions for a range of home chemistry experiments requiring only…

Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until the late…

Wooden case with a blue synthetic covering. Case opens on a hinge to reveal three shelves of amber glass bottles with red metal lids; 21 bottles containing the following: aluminum sulphate, ammonium chloride, borax,…

Manual written to accompany the Gilbert Chemistry Outfit No. 7 chemistry set for middle to high school-age students. Includes a range of experiments in areas of inorganic chemistry, electrochemistry, organic chemistry,…

Cardboard box with removable lid; lime cardboard insert with various indentations and slits for chemicals and tools; on the bottom is a row of six amber glass bottles with lime metallic removable lids houses in…

White cardboard box with blue writing; contains black, blue, yellow, red, and green spheres as well as wooden and metal connectors.

Models kits, such as this one, are often found in laboratories and classrooms and are…

American Optical Corporation Sixty student model monocular microscope features American Optical Spencer objective lenses.

American Optical Corporation was a successor to the Spencer Lens Company, founded by Charles…

The cover of this chromolithograph pamphlet depicts the entrance of Monsanto's Hall of Chemistry exhibit which opened in Disneyland's Tomorrowland in July 1955. Foldout contains illustrations and text on how chemistry…

Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until the late…

The pamphlet provides an overview of the rules, prizes, and purpose of the Southern California Science Fair, held April 23-29, 1955, at the Los Angeles County Museum. The following year, Beckman Instruments would become…

The pamphlet provides an overview of the rules, prizes, and purpose of the Southern California Science Fair, held April 14-20, 1956, at the Los Angeles County Museum. Beckman Instruments was a sponsor of the Science…

The booklet describes the organization responsible for the Fifth Annual Southern California Science Fair, held in April at the Los Angeles County Museum. A list of student exhibitors includes their name, grade, exhibit…

This is one of many letters written to Arnold Beckman in response to his speech on the topic of education. Robert DuPuis, a vice president of Philip Morris, suggests that improved salaries and industry-sponsored…

In this draft, Arnold Beckman describes the chain of events that lead up to his speech on the subject of public education and states that the vast majority of feedback received has been positive. He then addresses the…

Cover features the image of a boy playing with a chemistry set flanked by a man working in an industrial lab; interior has a yellow plastic compartment tray that houses the multiple components of the kit; components…

In this third lecture in a series on valence and molecular structure, Pauling addresses ligancy, coordination numbers and complexes, metallic valence, oxidation numbers, hydrogen bonds, and weak forces.

In part two of this lecture series on valence and molecular structures, Pauling focuses on ionic and covalent bonds, bond and molecular resonance, and how different bonds effect an element's properties. To demonstrate,…

This is the first in a series of three recorded lectures about valence and atomic structure given by Linus Pauling when he was a professor of chemistry at the California Institute of Technology. In this lecture, Pauling…

Concerns recommendation of Tom Newlin as a teaching assistant as well as plans for revising the Chemistry program at Earlham College. The last paragraph makes references to the current state of development of solar…

Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until the late…

White metal case with color graphic of two young boys using the Gilbert microscope set. Case opens on a hinge. Inside, a blue styrofoam tray holds a plastic microscope, an electric plug-in light, an objective lens, a…