This information is from the January 7, 1973 edition of the Baltimore Sun.
Sherman Mark Butler, 20, lived in the 200 block of North Monastery Avenue in Irvington. His body was found alongside Hutton Avenue near Wetheredsville Road on January 6. He had been shot twice and the police believe he had been shot elsewhere and left in the park. There was no identification on him or personal items and the right rear pants pocket had been turned inside out. He was identified through fingerprints.
I haven't found any indication that this murder has been solved.