Anyone who was around during the late 20's and early 30's more than likely used these small Lysol bottles in their house. This one was made by Whitall Tatum and is embossed LYSOL INCORPORATED, BLOOMFIELD N.J. with their trademark WT inside a triangle on the base. Not only did WT Co make insulators, but they also made a wide variety of bottles from Bitters to medicines. Someon can amass quite a nice collection of insulator related bottles quite easily once you know the makers logos.