Trying using some of the following words combined with the name of your pioneer or a related subject.
- sources
- document* [note the wild card character at the end of this term]
- personal narratives
- correspondence
- letters
- diaries
- interviews
- speeches
- quotations
- manuscripts
- reports
*You may want to combine some of the above words using "or"
Examples:
(sources or personal narratives or correspondence or diaries) and "charles loring brace"
(letters or documents or sources) and "settlement houses"
- OR Look for the person as Author