Great to hear about those who practice from Arban's. My first copy I got as a junior in HS finally fell apart while I was in college after a few soakings in the rain and I discarded it. On my comeback in 2006, I bought a new Platinum Edition. I still remember my parent's original phone number in Carnegie PA (US) as was only 4 digits as later added BR for BRowning, and such was even before the rotary dial phone. Too, later, Carnegie PA was one of the first 2 communities to be equipped with Bell system Touch Tone phones, a variant as are still mostly used presently. What really fascinates me is that I have two pictures framed in Chicago IL where the framer's label also reflects only a 4 digit phone number. Shucks, now some phones allow one just to call the person you wish to reach just by voice (assuming you've pre-programmed them into your phone). Yes, I also remember the older 6 volt battery powered phone my grandmother once had that you just cranked to get the operator who would then connect you to the party you were calling. Amazing communication advances in my life, and I seldom now give much thought to such.