Vintage AP Dress Watch References

[Watchman001]

I was recently gifted a family heirloom, a vintage AP 25574BA, day date. At around 33mm, it is small by today’s standards, but even as a bigger guy, I find it amazing. This watch has ignited in me an interest in vintage AP watches outside of the RO family. I would appreciate information on any websites, references, etc. where I can learn more about past models, look at pics, etc.