In 1991, Alfred A. Knopf, Inc., a publishing company owned by Random House, brought out a new edition of The Three Investigators books under their Bullseye Books publishing name. These large-size paperback books measure about 5 1/4" X 7 1/2" and feature colorful cover art by Roger Loveless or Dominick Finelle surrounded by a border of question marks. It is appropriate that the question mark is now the symbol on the spine instead of the "keyhole" silhouette. The texts contain the Sebastian introductions and none of these books have internal illustrations. The paper stock is of a higher quality than that used in other paperback editions. This edition originally sold for $3.95 per copy.
The titles in this edition were published in an erratic sequence, some higher-number titles being published before some of the lower-number titles. As a general observation, #36 "Missing Mermaid" seems to be the most difficult title in this edition to find. Because of the colorful covers and overall high quality of these books, these are truly an attractive addition to a collection. Unfortunately, only twelve of the original 43 stories were published in this edition. They are:
Scans of each of these titles in this format can be also be viewed in the Original Series section of this site along with additional publishing information.
You may also be interested in learning more about Three Investigators artist, Roger Loveless.