- University of Illinois at Urbana-Champaign, University Library
Armorial. Ownership. 64x93 mm. [motto:] VESTIGIA NULLA RETRORSUM / Frederick Adolphus Philbrick. / Middle Temple. Coat of arms. Escutcheon: a bendy of six, azure and argent. Crest: arising from a tower, a leopard gorged with a coronet. Motto: Vestigia nulla retrorsum.  Philbrick, a noted philatelist, was an English judge.  Motto: Vestigia nulla retrorsum = There is no going back.
- Rare Book and Manuscript Library, University of Illinois at Urbana-Champaign; For more information, please contact the Rare Book and Manuscript Library: https://illinois.edu/fb/sec/7016277