There were no books, and history was taught using hectograph copied sheets. Hectograph pencils and pens are sometimes still available. The printed matter can not be stenciled, mimeographed or through a hectograph process. The gelatine hectograph has been commercialized by Joan Bess and Lou Ann Gleason. The hectograph has been plasticized, and made more resilient. While in high school, Blish self-published a fanzine using a hectograph, called "The Planeteer". Hailey reviewed the old hectograph outlines and refined them for publication. The hectograph has been modernized and made practical for anyone to use. Unlike a spirit duplicator master, a hectograph master is not a mirror image.