Treasure Under The Basement

The 1930s was an era when labor was quite available and many public projects got started that called for a lot of handwork. This held true in the field of natural resource management as well as at large. In California, a forester named Albert E. Wieslander began a U.S. Forest Service project to map the vegetation of California. Many teams of botanists hiked ridgeline to ridgeline, pausing to gaze out over the landscape and mark in colored pencil on 30’ USGS quadrangle maps the vegetation patterns they saw. Only a few of these vegetation maps were ever published, and the set of well over a hundred hand-drawn maps of about 40% of the state lay forgotten.

The set of maps was nearly thrown out on two different occasions, when in the 1980s they were rescued by a professor at UC Berkeley and started to be curated and put to use. They are incredibly valuable from the point of view of historical ecology, giving a view of the vegetation of the state 75 years ago. A number of people have been working on the project of digitizing the Wieslander data, including my officemate Jim Thorne who is leading the effort to create GIS data from scans of the original maps.

The Wieslander map set was complete for the Sierra Nevada mountain range except for the Lake Tahoe basin area, where the hand-drawn maps had gone missing for a decade or more. These maps resurfaced Saturday.

Jim had been in touch with an emeritus professor at UC Berkeley by the name of Paul Zinke, who was one of the botanists employed by Wieslander, and was well in his 80s. Jim hoped that the oral history program at Berkeley would interview him, but sadly he died last year before the interview could take place. Jim then got in contact with Zinke’s son Michael, and after a while arranged with him to browse through some of Zinke’s papers. Last weekend, in a crawl space under the basement floor, they struck paydirt. The missing maps were there.

Above is a photo of the happy discoverers — Michael, Sarah, and Jim left to right.