Kelsey (@khlivingston) lives in Washington DC. She also has a way with construction paper, tape, and cardboard. She sent in a homemade postcard featuring the subway lines of the District. (I am a former Green Liner.) The postcard naturally says:
GREETINGS FROM THE DISTRICT
I do not know how long it took to make this postcard, but I imagine it may have taken longer than climbing the stairs at the Woodley Park station. Thanks for sending this in, Kelsey! If you’re ever in Philadelphia, let me know and we can explore SEPTA together.