Call park and recreations.
Call the city parks and recreation and how then
Recreation & Parks and or in the municipal building on Holiday St.
Just as Darnell wrote, I believe the best bet is to go during business hours to the building next to the pool to inquire about renting the venue. Good luck!
Two ways you could go about finding out is , 1. Google Baltimore park & recreation or go directly into the building right next to the pool and ask questions , they might can point you in the right direction .
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