After retirement, she became interested in bridge. She won the world Women's Pairs in 1978, the Women's Olympiad Teams in 1984 and the Venice Cup in 1987 and 2003. In 1987 Wei-Sender was elected an ACBL Honorary Member, and the Ambassador of Bridge for the World Bridge Federation.
- Action for the Defense: when the enemy opens the bidding, Katherine Wei and Ron Andersen (New York: Monna Lisa Precision Corp., 1980), 245 pp., OCLC 9272267
- "Defending Against Strong Club Openings", Katherine Wei, ed. Ron Andersen (Louisville, KY: Devyn Press, 1981), 9 pp. – Championship bridge series, no. 7, OCLC 30316772
- Precision's One Club Complete, Katherine Wei and Judi Radin, ed. Ron Andersen (Monna Lisa, 1981), 169 pp., OCLC 19110524
- Second Daughter: growing up in China, 1930–1949, Katherine Wei and Terry Quinn (Little, Brown, 1984), 243 pp. OCLC 10605894
- On the Other Hand: a bridge from East to West, Martin Hoffman and Kathie Wei-Sender (Los Angeles: C&T Bridge Supplies, 1994), 135 pp., OCLC 45223272
- Precision Today: your guide to learning the system—or fine-tuning your precision partnership, David Berkowitz and Brent Manley, ed. Kathie Wei-Sender (Memphis, TN: DBM Publications, 2002), 219 pp., OCLC 64033292
- The Wei of Good Bridge, Kathie Wei-Sender and Martin Hoffman with David Burn (London: B.T. Batsford, 2003), 143 pp. OCLC 56469909
- Francis, Henry G., Editor-in-Chief; Truscott, Alan F., Executive Editor; Francis, Dorthy A., Editor, Fifth Edition (1994). The Official Encyclopedia of Bridge (5th ed.). Memphis, TN: American Contract Bridge League. p. 766. ISBN 0-943855-48-9. LCCN 96188639.CS1 maint: Extra text: authors list (link)
- Wei-Sender, Katherine. ACBL.
- Katherine Wei-Sender. World Bridge Federation.
- "Induction by Year". Hall of Fame. ACBL. Retrieved 2014-11-11.
- Citation at the ACBL Hall of Fame – with video interview
- "International record for Katherine Wei-Sender". World Bridge Federation.
- Women Stars at the World Bridge Federation, with biographies (Wei-Sender [ biography ] is no longer one of the listed stars)
- Kathie Wei-Sender at Library of Congress Authorities, with 2 catalogue records (no bridge; see WorldCat)