Datapoint Earlier African American Vernacular English/Relativizer where or a form derived from where

Variety: Earlier African American Vernacular English
Feature: Relativizer where or a form derived from where
Value: C - feature exists, but is extremely rare
Informants: Alexander Kautzsch

Examples

Example 1318:
My father was one o de founders o' de Underground Railroad where help de slaves to run way to de North ...

Source: Perdue, Charles L. and Barden, Thomas E. and Phillips, Robert K. 1992: 17