This series is comprised of notes, manuscripts, reports, and other material created and or used by Jaeger in his professional work as a biologist who specialized in desert ecology. Materials primarily pertain to plants, animals, and the geographic landscapes that Jaeger studied. A selection of directories and membership lists from various organizations that Jaeger was affiliated with are also included in this series.

This series is comprised of notes, manuscripts, reports, and other material created and or used by Jaeger in his professional work as a biologist who specialized in desert ecology. Materials primarily pertain to plants, animals, and the geographic landscapes that Jaeger studied. A selection of directories and membership lists from various organizations that Jaeger was affiliated with are also included in this series.

This series is comprised of notes, manuscripts, reports, and other material created and or used by Jaeger in his professional work as a biologist who specialized in desert ecology. Materials primarily pertain to plants, animals, and the geographic landscapes that Jaeger studied. A selection of directories and membership lists from various organizations that Jaeger was affiliated with are also included in this series.

Minutes from meetings of the Board of Trustees for The Municipal Museum; Death Valley '49ers, Inc; and Desert Protective Council.

This series is comprised of notes, manuscripts, reports, and other material created and or used by Jaeger in his professional work as a biologist who specialized in desert ecology. Materials primarily pertain to plants, animals, and the geographic landscapes that Jaeger studied. A selection of directories and membership lists from various organizations that Jaeger was affiliated with are also included in this series.

Handouts and fliers, many including maps and directions, for meetings, events, and palavers.