Is C.P.H. Gilbert the Same Architect as Cass Gilbert, Who Designed the Woolworth Building?

 No. C(harles) P(ierrepont) H(enry) Gilbert, a "manion specialist," designed a number of distinguished residences in Brooklyn and Manhattan—including the home of Frank W. Woolworth. This, and the habit of referring to C.P.H. Gilbert by his initials, has led even some architecture experts to confuse him with Cass Gilbert, the more famous designer of Woolworth's iconic office building in lower Manhattan.

Video embed code: 
Creative: Tronvig Group