Watermarks in paper only appear with transmitted light (light going through). The archives have a variety of watermark samples including Crane watermarks, watermarks for other companies, and miscellaneous watermarks in correspondence received by Crane. We will be posting many of these watermarks throughout October.
Here is a watermark on letterhead from the Kalamazoo Wagon Company.
This letter from the Kalamazoo Wagon Co. was written on Crane paper and sent in 1900.
Here is the same letter lit from behind.