McComas Institute
McComas Institute is a historic school located at Joppa , Harford County , Maryland , United States . 
<triplet> McComas Institute <subj> Maryland <obj> located in the administrative territorial entity <triplet> Joppa <subj> Maryland <obj> located in the administrative territorial entity <triplet> Harford County <subj> Maryland <obj> located in the administrative territorial entity <triplet> Maryland <subj> Harford County <obj> contains administrative territorial entity