Ray's arithmetic: intellectual arithmetic(book two)
Ray's Practical Arithmetic(book three)
Key to Ray's new arithmetics: intellectual and practical
Ray's new test examples in arithmetic
Ray's New higher arithmetic
Key to Ray's New higher arithmetic
Ray's Algebra Part First
Ray's Algebra, Part Second
Ray's Treatise on Geometry and Trigonometry
Mott Media has reprinted this series.
Here is a review and explanation of comparable grade levels for these books.
There were more Ray's Arithmetic books, but I believe they were alternate editions of the books listed above. I'm not familiar with this curriculum, so if you see something missing, check Google Books. I did the best I could before I became dizzy with all the listings for Ray's!