I'm a 7-digit girl myself...though I vaguely remember when I was a kid sometimes our number was spoken as "Fireside" or "F-I" followed by 5 digits...but I learned the number as 34x-xxxx whatever it was.

I'm very glad that you, and others, enjoy this type of post...because I enjoy having a forum to share our stuff, with an audience that's at least somewhat interested! (Meaning that I know some folks are more interested than others...which is fine )