On Mon, 18 Jan 2010, David Gerard wrote:
If they want to filibuster the reliability of this
source, it speaks
of some child being Robert Heinlein's great-grandson ... Heinlein
didn't have any children. I wonder where they got that from.
Wikipedia's article on Heinlein nowhere says he didn't have any children.
It's generally accepted that he and Virginia didn't have any children, but
Virginia was his third wife, and he was married to his second for 15 years.