Opus No.sort ascending Title Date Setting Publication type I.U.C. Notes
Timeline for Known Space November, 1996 Known Space: About Non-Fiction Updated from the version that originally appeared in Tales of Known Space
Travelers May, 2000 N/A Non-Fiction non-fiction for Space.com
Trellis, The November, 2003 Stand Alone Novella Collaboration, co-written with Brenda Cooper
Wanted Fan October, 1991 Stand Alone Filk Filk song set in the fandom world of Fallen Angels  
Wet Mars (Larry Niven Talks Terraforming) July, 2000 N/A Non-Fiction non-fiction for Space.com
What explains the present lack of citizen interest in and support for the U.S. space program? June, 1980 N/A Interview Interview
What Role can and should science fiction writers play in working with America's major corporations in planning for the future of society? March, 1980 N/A Interview Interview
What Will be Earth's next Great Energy Source? November, 1978 N/A Interview Interview
What Would You Produce Given a $10 Billion Budget? January, 1979 N/A Interview Interview
Where Next, Columbus? January, 1992 N/A Non-Fiction Collaboration, co-written with Jerry Pournelle
Wisdom August, 1999 Stand Alone Short Story This issue of Altair, an Australian fanzine, was published in conjunction with AussieCon III, the 1999 WorldCon.
Wisdom of Demons, The July, 2000 Draco Tavern Short Story D.T. 11 Draco Tavern think twice before accepting gifts from the Glig.
Woman in Del Rey Crater, The June, 1995 Known Space: Gil Hamilton Short Story Gil still solving crimes on the moon
Works in Progress October, 1991 N/A Non-Fiction Discussion of works in progress as of the publication of Playgrounds of the Mind  
World of Ptavvs/A Gift from Earth/Neutron Star June, 1991 Known Space: Collection Collection Omnibus of the first three books in the "Known Space" series. Contents: World of Ptavvs Gift from Earth, A Neutron Star

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