Hi Megan,
Thanks for writing in to C2C Care! I've reached out to one of our experts for advice:
The adhesive on the label is most likely either water or rubber based. If it is water based, you may be able to reactivate the glue with a lightly wet brush (not sopping, but more than damp) and then gently press the paper down onto the reactivated glue. To see if your adhesive is water based, you can take a q-tip or other swab, wet it with water, then roll on an area of exposed adhesive. If the area becomes sticky, then your adhesive is water based and you can follow the advice above. If it is rubber based, then the old glue won't become tacky.
Personally (Liz the moderator), I've used wheat starch paste to readhere lifting paper labels since it has good tacking properties without being too wet to apply. The University of Virginia has instructions on how to make wheat starch paste in the microwave: Wheat Starch Paste in the Microwave
I hope that helps, please reach back out if you need any clarification!
All the best,
Liz
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Elizabeth Peirce
C2C Care Community Monitor 7/21-8/3
Conservator (Objects)
Library of Congress
Washington DC
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