[header] How to locate a company [title] Examine the company's published material. [step] For situations where you may have gotten a business card, letter, and/or hand out at a meeting, these are good documents to find such information. [substeps] Look out particularly for the company's letterhead at the top of any letter and/or legal sized documents. 
Usually these have the company's name, address, phone number, and perhaps e-mail and website also in the layout. The company's social media contact info may also be in the display.