Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 265
9. , 3, Jf, 5, G, 7, 8, 10 Sr 12 mCH. S«it MMtm 73 CE^MFmmE. … TO PLACE m FROjYT OF HYDRANTS. 12 X 12. 6 inch deep. 14 x 14. 6 inch deep. 16 x 16. 6 inch deep.