...I can certify he is almost a poet himself... 
Alexandre Dumas, Pere 「Ten Years Later」
...This route willserve to certify that no other sources of the Nile can come from thesouth without being seen by me...
David Livingstone 「The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873」
... "This is to certify that James Smith is a member of The Plucky Class of the Hampton Institute, and is in good and regular standing...
Booker T. Washington 「Up From Slavery: An Autobiography」
...The tongue being protruded to lickthe nose and lips will certify that the substance has been swallowed, andafter a caress or two the dog may be released...
Dinks, Mayhew, and Hutchinson 「The Dog」
...Hope to certify the steps which had been taken, that the Admiralty and Secretary of State might be satisfied of every thing in my power having been done; and this he did in the following terms...
Matthew Flinders 「A Voyage to Terra Australis Volume 2」
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