Appears in exhibition catalog as entry no. [not numbered]
Mr. Stoppel has also contributed such delicately executed miniatures on ivory, as make us regret that the phot0graphic art has so overwhelmed this species of portraiture. [P. 27; exhibited under heading: "Works of Non-Resident Artists."]
Fourth Exhibition and Fair of the M.C. Mechanic Association, at the New City Hall in the City of Portland, October, 1859. Portland: Ira Berry & Son, Printers. 1860.