Some friends were talking about a potential up-coming move and one of them said, "We'll have to get new library cards."
In the scheme of a multi-state move with little kids in tow, new library cards are a small item compared to the other logistic hurdles they will have to overcome.
The buildings are all different. The systems clearly have different purposes or different things they focused on in collections. But, getting my library card connected me to something bigger, the community as a whole.
It's a marker of identity that "yes, I belong here" no matter how temporary some of those cards were. I had my DC card for a grand total of 14 weeks but I fondly remember the Northeast Neighborhood Branch. I checked out "Interview with a Vampire" and "Cider House Rules" from their room of paperbacks. I think that was a definitive semester as I shifted what I was reading and feeling like a "grown-up" in my choices.