If your company still exists, check the corporate web site for any ABOUT or HISTORY pages. Some additional information may be on the INVESTOR RELATIONS pages. Some companies do maintain corporate archives, however, once a company ceases to exist, the archives are often "lost". Please contact either Ed Oetting or Jenny Mueller-Alexander for assistance if you think you need access to a company archive.
If your company has changed ownership over time, the Background Sources below can provide more context -- social situations, business dealings and rivalries, industry conditions, economics, etc.