While Lee Harvey Oswald is a well-known figure in American history due to his assassination of President John F. Kennedy, his name isn't directly featured in any widely known orations or speeches.
Perhaps you're thinking of a speech or declamation about the assassination of President Kennedy itself? If so, the specific details of the assassination and Oswald's role are often discussed, but his name isn't usually the central focus of these speeches.
Could you provide more context or information about the speech or declamation you're thinking of? This might help clarify your query and lead to a more helpful response.