Bookbinding tape is ridiculously expensive. I know it’s archival but it is just tape. I am tempted to improvise with some wood glue and a roll of black ribbon. The good news is that I have my hands on an entire lot of early readers, spellers, and primers from the turn of the century that were really dirt cheap. It seems like there is an abundance of them in Pennsylvania. One of these days, I’ll have to go there with a truck.