Sofie LH

The Media Conservator

66 notes &


Cleaning Up…Clean Up…Everybody Do Your Share…

If you have mold that must be surface cleaned, you need a HEPA vacuum to help safely remove the unhealthy mold and dirt from the surface and prevent air-born particles. What is a HEPA vacuum exactly? A vacuum with a High Efficiency Particulate Air (HEPA) filter captures 99.97% of particles down to 0.3 microns diameter. In St. Louis NARA has a lot of documents contaminated with mold after the 1973 fire. HEPA is a necessity in our work, but suction level is also extremely important when working with fragile paper. In addition to variable speed Nilfisk vacuums, we also have Shuco vacuums in our Decontamination Lab. Designed by the medical industry, the Shuco has a lower suction and smaller hose than many HEPA vacuums are equipped. But even with the power assist of HEPA, work is most safely performed inside fumehoods when possible.

That Shuco vacuum looks awesome!

(via conservethis)

Filed under archive preservation mold removal

345 notes &



Here we have a lovely pocket edition of The Compleat Angler printed in 1825 in London by William Pickering.  Both an author and biographer, Izaak Walton’s (1593-1683) first edition of of The Compleat Angler was printed in 1653.  He produced a second edition almost immediately after in 1655.  In this second edition we see the format that subsequent editions have kept.  Walton wrote the book as a dialogue between travelers who practiced different forms of recreation: Piscator (fisherman), Venator (hunter), and Auceps (falconer).  Piscator teaches his companions the art of fishing and how its practice leads to a more meaningful life.  Walton continued to revise and reissue his work throughout his lifetime.  His friend Charles Cotton (1630-1687) worked on the piece as well, producing part two and finishing the text we are familiar with today.  

To get a sense of how small this book is I’ve included a few dry flies: a wooly bugger (fuzzy green one), a purple haze, and a CDC(cul de canard) Elk Hair caddis (small tan and orange one).


799.12 W239 c1825

A beautiful old edition of The Compleat Angler, from the University of Iowa Special Collections.

Filed under Books

28 notes &

Digitizing glasplate photographs

I recently started a side project of cleaning and digitizing at DTU ( Technical University of Denmark) in the department of Technological History. They have a nice collection of glass lanterns and glass plate negatives depicting building of bridges from 1910 and upward. The images have been used for teaching students about different types of bridges and some of the photographs were taken by the university professors themselves. Some of them are quite beautiful and I’m sure I will be posting some more at a later stage. 

Filed under photography digitization archive bridges DTU

43,760 notes &



In 1940, knowing that France was falling into the hands of the Germans, the workers of the Louvre took action. All 400,000 works were evacuated and sent to the south of France. In secret they transported the priceless paintings and statues, and held by wealthy families in Vichy,where they would remain for five years, only returning at the end of the war.The quick action of the workers without a doubt saved the masterpieces from becoming part of the over 5 million works that were looted by the Nazis during the war.

I’m picturing the Nazis showing up to find the place empty and nobody there but a night watchman who says he doesn’t know anything about any paintings and statues.

(via varnishisapowerfulliquid)

Filed under art Louvre ww2