Does anyone have any information on the Sandra Dijkstra Literary Agency? I'm trying to find out about their list of published authors as well as whether they are a reputable agency. Has anyone ever sent any submissions to them and if so, how did they respond?

It gives a list of the types of fiction they look at in the Writer's Handbook 2006 but there isn't a website with their authors and just different bits of information around on the web which isn't concentrated in one place.

Anyone able to help?