A dictionary of architecture and building : biographical, historical, and descriptive (1902)
Sturgis, Russell, 1836-1909 · New York : The Macmillan company · leaf 563
Fig. 58 (Plan).954 VAULT The form is used in the capitol at Albany, N. Y.,for supporting stairs. … Fig. 59 (Plans).(/) One e(imponent is semicircular and theother semielliptical, but of wider span, theheights being equal; or both may be semi-elliptical.
Architecture · Architects
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