Your grandfather's not being stubborn, he's just practical. Yeah, people absolutely carried paper maps and atlases around - it was just normal. You'd grab a Rand McNally atlas before a trip, or if you were going somewhere specific, you might stop at a gas station and ask for directions or grab a free map they had at the counter. The thing is, people planned differently back then. You didn't just wing it and expect turn-by-turn directions; you'd actually study your route beforehand, write down street names, maybe jot down notes about landmarks. It took more prep work, and yeah, people got lost way more often, but it wasn't like the world ended if you took a wrong turn - you'd just backtrack or ask someone for help.
For longer drives, a lot of folks would call ahead to get verbal directions from whoever they were visiting, or they'd rely on highway signs and knowing the general direction they needed to go. The stress was definitely higher - I remember my parents getting frustrated with maps on family road trips in the 90s, trying to read tiny print while driving. But there's actually something to be said for your grandfather's approach: paper maps don't die if your battery dies, and they force you to actually know where you're going instead of blindly following a GPS voice. Now that I think about it, running routes through unfamiliar farm roads, I sometimes wish I had better spatial awareness instead of always relying on my phone's GPS to get home.