The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

The Biologs sub-series contains the materials related to the biographical articles that Klein regularly wrote for Analog magazine. He started this in 1976 with a Biolog on Jack Gaughan and continued until 2004. Materials include correspondence with both editors at Analog and the subjects of the Biologs, as well as questionnaires, notes, Biolog drafts, and some reprints or facsimiles of the final drafts.

This series is comprised of writings and other works by Jay Kay Klein. This includes fiction, biographies (that were not Biologs), obituaries and memorials, convention write-ups (these were summaries or reports of conventions that often appeared in fanzines), a handful of movie reviews, a few pieces of nonfiction, and more.