Maryland Pressed Steel Company was an American aircraft manufacturer of the Bellanca CD, and CE aircraft. The New York & Hagerstown Metal Stamping Co manufactured arms for the British and was reorganized into the Maryland Pressed Steel Company in 1914. In 1916, the Poole Engineering and Machine Co acquired the company as a division. The company produced arms for the wartime effort. The company attempted to break into the lucrative aircraft production field with the foundation of their Aircraft Department.