This lot of 25 vintage 1920's McGraw Hill books from the Chemical Engineering Series includes textbooks on Analytic Chemistry and Applied Mathematics. Published in the 1920s, these hardcover books cover topics in Chemical Engineering and Physical Chemistry. Written by various authors, the collection features illustrated content and is a valuable resource for adults and further education students interested in the field. Made in the United States, these books provide a comprehensive look at unit processes in organic synthesis and chemical engineering, making them a unique addition to any library. They are in good condition with some wear and marks to the hardcovers. Some pages have marks. They have a slight vintage smell.