I read the ascp book by kyeldsberg (spelling?) for boards in addition to memorizing the cp review book. It was concise, thorough, and had big color photos. It would be a good choice.
For coagulation, I recommend this book to all of my residents. Inexpensive, small (can fit in a white coat pocket), well written, and covers pretty much everything you would need for coag on CP boards.
There is a CAP "Color Atlas of Hematology" that people find really useful. This is maybe not one you would buy for yourself, but you may find one lying around. The CAP Atlas of Hemoglobinopathies (?exact title) is a little quirky (all case studies) but similarly useful.
I thought the CAP books were pretty useful for their niche, but don't really qualify as "complete" benign heme texts. There's a fairly new version of the Kjeldsberg book referred to above; I used the older version, and it was adequate. Not a particularly exciting read and I wasn't a fan of its form factor, but it seemed OK minus much in the way of images. The CAP stuff I thought was very good for images.