"Alan Erskine" wrote:

"William R Thompson" wrote:

This is another unknown picture from White Sands;
it looks like it might be some sort of cannon shot--a
rocket-assisted projectile, perhaps?

http://www.wsmr-history.org/Unknown.htm

HARP related? Looks a tad more powereful than a standard howitzer.

It might be HARP. The trouble is that the people at
the White Sands Museum have no idea what these
pictures are, or when they were taken; apparently
they were archived without any proper records. They
put the photos on their website in the hope that
somebody would know something definite.

--Bill Thompson