The first company is the "Resistal Fabrics Company", and the second is "Semter Limited." The first was purchased by a William Kootz in the presence of William A. Otto, and the second was purchased by Otto himself.
I've tried to track down the firms and names on the certificates using the great and powerful internet, but to no avail. The companies were most likely bought up ages ago, or simply went out of business. Hypothetically, if I were to find the currently existing company that bought up those mentioned on my certificates, I could feasibly sell these shares. Which would be a nice, but highly unlikely situation.
Either way, here they are:
