A Key to Weidenhamer's Mental Arithmetic‎ Hardcover Book 1903

The product is a hardcover book titled "A Key to Weidenhamer's Mental Arithmetic" by Edward Brooks, published in 1903 by Charles E Merrill in New York. The book is focused on mathematics, specifically arithmetic, and is written in English. It serves as a guide or key to understanding the concepts presented in Weidenhamer's Mental Arithmetic. This vintage book is an original printing from the United States, making it a valuable and collectible piece for those interested in antique educational materials.