Timberline Resources Corporation announce that Mr. Donald J. McDowell and Mr. David C. Mathewson have joined the Company's Board of Directors. Mr. Mathewson has greater than 50 years of exploration experience, primarily focused in Nevada. Since June 2016, Dave has been Vice-President and Head of Exploration at U.S. Gold Corp. He is also self-employed since 2001 as owner and geologist at Nevada Gold Ventures, LLC. Notable discoveries made while head of Newmont Nevada's exploration team from 1989 through 2001 include: Tess, Northwest Rain, Saddle and South Emigrant in the Rain mining district, as well as important deposit extension discoveries at Newmont's Gold Quarry and Mike deposits. Dave's work as founder, Director, and Vice President of Exploration from 2009 to 2014 at Gold Standard Ventures led to the consolidation of the Railroad-Pinion district and the North Bullion &Bald Mountain discoveries. The Company also announces that Mr. Paul Zink has resigned from the Company's Board of Directors effective June 21, 2018 due to the significant demands from his other commitments. The Company's Board of Directors and management express their appreciation for Paul's service and valuable contributions during his tenure as a director and wish him well in his current and future endeavors.