InmateAid Ask the Inmate Letters & Photos Postcards & Greeting Cards Discount Calls Maryland Showing 56–60 of 80 results Sort by: Random Newest first Oldest first Title A-Z Title Z-A Random Charles County MD Detention Center Annex Featured 301-932-3100 MD DOC – Jessup Pre-Release Unit (JPRU) – CLOSED Featured 410-540-2700 MD DOC – Southern Maryland Pre-Release Unit (SMPRU) Featured 301-274-4701 MD DOC – Maryland Correctional Institution – Hagerstown (MCI-H) Featured 240-420-1000, 410-229-1351 Backbone Mountain Youth Centers Featured ← Prison and Jail Direcory → Letter