06/30/08

June 30, 2008 – Coeur d’Alene – Timberline Resources Corporation (AMEX:TLR) joined the Russell Microcap Index when Russell Investments reconstituted its family of U.S. indexes on June 27, 2008 according to a preliminary list of additions posted Friday, June 20, 2008 on http://www.russell.com.

Membership in the Russell Microcap Index, which remains in place for one year, means automatic inclusion in the appropriate growth and value style indexes. Russell determines membership for its equity indexes primarily by objective, market-capitalization rankings and style attributes.

Randal Hardy, CEO of Timberline commented; “I am very pleased that Russell has selected Timberline Resources to be included in the Russell Microcap Index. This is a further validation that our company’s business model is becoming more widely recognized as a vehicle that provides a mainstream investment into the resources sector.  Timberline’s addition to such an influential and actively traded index will certainly have many benefits for our shareholders including additional liquidity in the marketplace and a higher profile based on increased exposure to institutional investors.”

Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for both passive and active investment strategies. An industry-leading $4.4 trillion in assets currently are benchmarked to them.

Annual reconstitution of Russell indexes captures the 4,000 largest U.S. stocks as of the end of May, ranking them by total market capitalization to create the Russell 3000 Index and Russell Microcap. These investment tools originated from Russell’s multi-manager investment business in the early 1980s when the company saw the need for a more objective, market-driven set of benchmarks in order to evaluate outside investment managers. Total returns data for the Russell Microcap and other Russell Indexes is available athttp://www.russell.com/Indexes/performance/daily_total_returns_us.asp.

About Russell:

Russell Investments aims to improve financial security for people by providing strategic advice, world-class implementation, state-of-the-art performance benchmarks, and a range of institutional-quality investment products. With more than $213 billion in assets under management, Russell serves individual, institutional and advisor clients in more than 40 countries. Russell provides access to some of the world’s best money managers. It helps investors put this access to work in corporate defined benefit and defined contribution plans, and in the life savings of individual investors.

Founded in 1936, Russell is a subsidiary of Northwestern Mutual Life Insurance Company. Headquartered in Tacoma, Wash., U.S., Russell has principal offices in Amsterdam, Auckland, Johannesburg, London, Melbourne, New York, Paris, San Francisco, Singapore, Sydney, Tokyo and Toronto.

About Timberline Resources Corporation:

Timberline Resources Corporation has taken the complementary businesses of mining services and mineral exploration and combined them into a unique, forward-thinking investment vehicle that provides investors exposure to both the “picks and shovels” and “blue sky” aspects of the mining industry.

Timberline has contract drilling subsidiaries in the western United States and Mexico and an exploration division focused on high-potential, district-scale gold projects.  With its anticipated acquisition of a premier American underground mine contractor, Small Mine Development, Timberline will strengthen its position as an emerging, vertically-integrated resource company.  Timberline is listed on the American Stock Exchange and trades under the symbol “TLR”.

Statements contained herein that are not based upon current or historical fact are forward-looking in nature. Such forward-looking statements reflect the Company’s expectations about its future operating results, performance and opportunities that involve substantial risks and uncertainties. When used herein, the words “anticipate,” “believe,” “estimate,” “plan,” “intend” and “expect” and similar expressions, as they relate to Timberline Resources Corporation, or its management, are intended to identify such forward-looking statements. These forward-looking statements are based on information currently available to the Company and are subject to a number of risks, uncertainties, and other factors that could cause the Company’s actual results, performance, prospects, and opportunities to differ materially from those expressed in, or implied by, these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, such factors, including risk factors, discussed in the Company’s Annual Report on Form 10-KSB for the year ended September 30, 2007. Except as required by the Federal Securities law, the Company does not undertake any obligation to release publicly any revisions to any forward-looking statements.

Contact Information:
John Swallow, Chairman
Phone: 208.664.4859