Reportedly, while with the firm, McKim noted Hoppin's exceptional skill at rendering with one architectural historian writing: "Among architects that had a facility for perspective Francis L.V.
Fellow office architect, Egerton Swartwout, characterized Hoppin's drawings as "colored, blue sky and trees where there aren't any, and flying shadows on the building, you know, a real snappy piece of work.
[7] Among his apprentices at Hoppin & Koen were Robert P. Huntington and Dudley Newton, Jr., the son of a prominent Newport architect.
[10] They designed homes for Francis Vinton Greene (a relative), James F. D. Lanier, Andrew C. Zabriskie, John J. Wysong, Harris C. Fahnestock, Charles Oliver Iselin, Henry Clews, and William Watts Sherman.
Wharton commissioned the firm to design her Lenox residence (with major input from her at every stage of the process), after having a falling out with Ogden Codman, Jr. Hoppin retired in 1923 to pursue a career as an artist,[11] and Koen died the following year in 1923.
He largely painted on location at visits to Soissons, Rheims, Arras, Ypres, Rome, Paris, Newport and Bar Harbor, Maine.
Senator Chauncey Depew);[40] and, after his death in 1954,[41] Cyril Barthurst Judge (whose late wife, Annie Lyman, had also died in 1954)[42] past president of the Newport Country Club, in 1963.