This is a quality product. The documents are well presented and interesting. I have also been impressed by how thoughtful History By Mail is with their customer communication. So many subscription services take advantage of their customers by sneakily auto renewing without any warning and making their cancellation process intentionally convoluted. Not History By Mail. These guys sent me a reminder email over a week before my subscription was due to auto renew with an easy cancellation link included, just in case I wanted to use it. That is such a classy move. This is the kind of company I like dealing with. I have renewed my subscription for another year.