For current betas search:

• Bloomberg in the Margolis Market Information Lab (MIL) at the Business Instructional Facility (BIF). Type the ticker symbol and hit EQUITY; then type beta and hit GO
• Value Line
• Try Betas by Sector. Note: use Mozilla Firefox to access this site.
• Look at the periodical O'Neil Database-- F. 332.632205 ON available by request through Oak Street.
• For information on methods of calculating betas; use Stocks, Bonds, Bills, and Inflation Yearbook Valuation Edition (Q. 332.67 St622).