Yep. Mine was 7033. Several green binders and you pulled the old pages out and replaced the new ones in, or just put the new ones in. I have my COEI book and Station Equipment book and some of the carrier pages. This was all abandoned in about 1976 when they closed the "trib" offices and pulled all switchworkers into the main C.O. I just got "rif'ed" to COEI. A much better place.