Your 1952 map is potentially very useful, so do please contact me via timetableworld.com AT gmail.com. Many of Timetable World best contributors choose to remain hidden behind nicknames, but the integrity of the website requires me to know who is providing material. I hope you'll join us.
I have exactly the same problem -- guar gum allergy -- and have been fighting with Amtrak over getting ingredients lists for years now. Please contact me at ncn_mail10 (at) fastmail (dot) fm. The mods have previously asked me to take some of my discussions off the board so I would like to discuss this over email.
Where did you come up with that jewel? Although I know most of the songs by heart, I would love to get an audio copy of that recording my disc disappeared long ago (probably about the time I got married - lots of things seemed to disappear one she moved in 50 years ago.. If you have the time and inclination, you can email the files to me at firstname.lastname@example.org.