So the full list so far is:
The Ideal
http://homepage.ntlworld.com/forgottenfutures/weinbaum/ideal.htm
The Planet of Doubt
http://homepage.ntlworld.com/forgottenfutures/weinbaum/doubt.htm
The Red Peri
http://homepage.ntlworld.com/forgottenfutures/weinbaum/peri.htm
Flight on Titan
http://homepage.ntlworld.com/forgottenfutures/weinbaum/titan.htm
Graph
http://homepage.ntlworld.com/forgottenfutures/weinbaum/graph.htm
The Last Martian, a poem
http://homepage.ntlworld.com/forgottenfutures/weinbaum/lastmart.htm
An Autobiographical Sketch of Stanley G. Weinbaum
http://homepage.ntlworld.com/forgottenfutures/weinbaum/autobiog.htm
The Black Flame
http://homepage.ntlworld.com/forgottenfutures/weinbaum/flame.htm
If anyone spots anything that looks wrong please let me know.