X0202 4 2004-04-27 0 0000216851 PETROLEUM & RESOURCES CORP PEO 0001202953 JONES MAUREEN A 7 ST PAUL STREET STE 1140 BALTIMORE MD 21202 0 1 0 0 Vice Pres., CFO & Treasurer Common Stock 2004-04-27 2004-04-30 4 I 0 1590 23.79 D 1730 I See footnote 2 There was a decrease in the undersigned's number of shares held by the Issuer's Thrift Plan Trust due to a loan obtained by the undersigned from the Trust in a transaction exempt under 16(b)(3). The number of shares is based on information as of 4/30/2004. Of these shares, 1615 shares are held in the Issuer's Thrift Plan Trust and 115 shares are held in The Adams Express Company Thrift Plan Trust and represent the undersigned's proportionate beneficial interests held in both Trusts. This number also reflects periodic contributions made during 2004 and changes in the number of shares previously reported (as of December 31, 2003, Form 5) due to fluctuations in the market price and interests in the Trust Maureen A. Jones 2004-05-03