I have ever read about some papers and artciles about OOP history. It seems to me that few people mentioned VFP. Frankly speakig, I don't know what VFP means.
If you meant a technology by VFP, I guess it is one that has been forgotten. I asked some
team members (they are at their 50's ) for advice about VFP but they told me they have not yet heard of this term.