General view of an employee conducting an analysis of an unidentified substance in the Bureau of Chemistry's Nitrogen Laboratory. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted…

General view of the Bureau of Chemistry's Nitrogen Laboratory showing assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted investigations into…

General view of an employee conducting an analysis of an unidentified substance in the Bureau of Chemistry's Nitrogen Laboratory. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted…

General view of two employees working in the Bureau of Chemistry's Oil, Fat, and Wax Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Oil, Fat, and…

General view of an employee in the Bureau of Chemistry's Water and Beverage Laboratory conducting an analysis on an unidentified substance. Assorted sample jars and scientific apparatus are visible in the photograph.…

The illustrated first volume of The Baker's Book, providing a comprehensive discussion of baking knowledge. Intended to be "every baker's hand book," the series describes the global history and significance of baked…

The illustrated second volume of The Baker's Book, providing a comprehensive discussion of baking. Intended to be "every baker's hand book," the series describes the global history and significance of baked goods,…

A textbook specifically devoted to the "practical instruction in the methods of examining vegetable foods, drugs, and their powders" written by Henry George Greenish, Professor of Pharmaceutics to the Pharmaceutical…

Illustrated trade card depicts the monument of Justus von Liebig (1803-1873) in Munich, Germany with an inset of Liebig working in the laboratory as well as a closeup of the statue's bust surrounded by a laurel wreath.…

Entitled "Egypte. Chasse au Crocodile," illustrated trade card depicts men hunting a crocodile in the Egyptian wilderness. The imagery could be referencing European adventurer Sir Henry Morton Stanley's 1887 visit to…

Entitled "Afrique. Chasse au Lion," illustrated trade card depicts hunters chasing a lion in the African wilderness. A hunter on horseback wears a turban and aims a gun at a lion that is standing upon another hunter.…

Portrait of Ira Remsen (1846-1927). Along with Constantin Fahlberg, Remsen discovered the artificial sweetener saccharin in 1879.

A native of New York City, Remsen received his M.D. from the Columbia University…

Notebook in which Charles F. Chandler (1836-1925) has pasted an assortment of government regulations and other items of interest related to food inspection and public health. Alongside these printed regulations are…

Entitled "How the Microscope Reveals Adulteration," photographic reproduction depicts arrowroot adulterated with rice starch. Both under magnification, the left image illustrates rice starch with the right side showing…

Photographic reproduction depicts bundles of wheat grown on an experimental farm at Rothamsted, England with varying amounts of manure and chemical fertilizers. The first column shows the year 1878 with the second…

A letter excerpt, likely by Charles F. Chandler (1836-1925) in which he posits that time spent extracting trace quantities of Arsenic from food coloring dyes is impractical as the proportion of Arsenic is too small to…

Produced by Rumford Chemical Works, manufacturers of baking powder, this cookbook features an illustration of the Rumford Chemical Works manufactory along with an illustration of the baking powder they produce on the…

Volume containing "recipes to improve the taste and sanitary effects of drinks." This concise manual for vendors of soda water presents various methods of preparation for soda fountain beverages, syrups, fruit essences,…

A representative from the Badische Company sends Charles F. Chandler (1836-1925) a sample of "Jelly Red" dye and a sample of candy colored with it. They have enclosed a copy of a letter from Coca-Cola bottlers and…

General view of the Bureau of Chemistry's Carbohydrate Laboratory showing assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Carbohydrate Laboratory analyzed the physical and…

General view of the Bureau of Chemistry's Carbohydrate Laboratory showing assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Carbohydrate Laboratory analyzed the physical and…

General view of employees at work in the Bureau of Chemistry's Protein Investigation Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Protein…

Close-up view of a polarimeter housed in a constant temperature dark room at the Bureau of Chemistry's Carbohydrate Laboratory. Part of the U.S. Department of Agriculture, the Carbohydrate Laboratory analyzed the…

Informational pamphlet on honey includes a description of how honey is produced, its value as a food, the flavor of honey, its health benefits, its economy, household uses, and how it can be used in cooking. Contains…

General view of an employee in the Bureau of Chemistry's Phytochemical Laboratory using a distillation apparatus to concentrate the odorous constituents of apples and peaches. Part of the U.S. Department of Agriculture,…