Plum Stones (subtitled The Hidden P. G. Wodehouse) is a set of 12 volumes of uncollected short stories by P. G. Wodehouse. All 25 stories were previously published in magazines, but not published in book form in the UK. The volumes were published posthumously between 1993 and 1995 in the UK by Galahad Books. The first two volumes were published in 1993, the following six in 1994, and last four in 1995. Each volume is a short booklet, with commentary on the stories by Tony Ring. The stories were printed in a limited edition with the permission of the Trustees of the Wodehouse Estate. The first sixteen sets were issued as an omnibus edition, published in 1993.

Volumes

Wodehouse, Detective Writer

First volume, 64 pages. "Mr McGee's Big Day" was six pages long in Ellery Queen's Mystery Magazine. For comparison, another Wodehouse story, "Strychnine in the Soup", was fifteen pages long when published in Ellery Queen in 1952.

Unrepublished Reggie Pepper

Second volume, 76 pages. All three stories feature the early Wodehouse character Reggie Pepper.

Theatrical Stories

Third volume, 64 pages. Under the title "The Golden Flaw", the story was published in McClure's with illustrations by Arthur William Brown. "Franklin's Favorite Daughter" was illustrated by David Robinson in Cosmopolitan. In the Strand, "Back to the Garage" was illustrated by S. Abbey.

Keggs, the Butler

Fourth volume, 36 pages. "Watch Dog" was illustrated by Phillips Ward in Hampton's Magazine. "Love Me, Love My Dog" was illustrated by Harry Rountree in the Strand.

First Impressions, Mature Reflections

Fifth volume, 52 pages. The story was illustrated by E. H. Shepard in the Strand, and by John Sloan in Collier's. The story was illustrated by "R. L. S." in Dream World, a Chicago-based magazine.

There But For the Grace of God Goes Baxter

Sixth volume, 28 pages.

Self-Derivatives Par Excellence

Seventh volume, 60 pages.

Bertie's Friends

Eighth volume, 44 pages. The first story features Bobbie Wickham and the second Bingo Little.

"In That Shape, Rotten"

Ninth volume, 40 pages.

Ethics and Eugenics

Tenth volume, 52 pages. "A Prisoner of War" was illustrated by Alfred Leete in the Strand. The story was illustrated by W. Heath Robinson in Pearson's.

Wrykyn Havoc

Eleventh volume, 36 pages.

First Drafts

Twelfth volume, 44 pages.