The ProQuest New York Times (1851-2004) offers full page and article images with searchable full text back to the first issue.
Primary sources are original documents and objects created during a period of time in history or after an event has occurred by someone who participated in that event. Primary sources can be
Written: letters, diaries, journals, court decisions, literary works and memoirs
Visual: posters, maps, paintings, photographs
Objects: clothing and tools
Oral recordings: interviews and speeches
Below are some great resources for finding primary source documents.