...We have not the slightest reason to doubt that this is my father's journal, and I certify that the letters he has brought home are my father's letters, and no others... 
Henry M. Stanley 「How I Found Livingstone」
...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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