This morning, an introductory article on Negerhollands by Robbert van Sluijs was published (in Dutch) on the Dutch website Stemmen van Afrika (Voices of Africa). It is a popular scientific website devoted to showing you the languages of Africa in words, images, and sound.
Here is a direct link to the article.
Please have a look even if you don’t understand Dutch for the pictures and the two sound files of the last speaker, Ms. Stevens (recordings by Robin Sabino).