With the successful formation of the newly created Yosemite National Park, Johnson and a few of Muir’s other acquaintances recommended that an association should be established to protect the national parks. This was due to the fact that many still did not support Muir’s ideals, and stockmen were still ‘attacking’ Yosemite National Park, with the intention of reducing its borders. Thus, in the year 1892, Muir gathered all his faithful supporters and they formed the Sierra Club. Muir was voted as the President, while Warren Olney was voted as the vice-president. The club was filled with mountain lovers and their motto was “to do something for wilderness and make the mountains glad”.

Once the club has been formed, they instantly opposed the reduction of Yosemite National park, in which they started to conduct educational and scientific meetings. During one of these meetings, William R. Dudley conveyed the idea of implementing ‘national forest reservations’, also known as National Forests. They had also succeeded in transferring Yosemite National Park from state to federal control in the year 1906.

Although gaining his new role at hand, Muir still continued publishing his works. One notable publication was “Our National Parks”, and this gained the recognition of President Theodore Roosevelt. Roosevelt made a trip to Yosemite in the year 1903, where Muir shared the alluring scenery and beauty of the valley. Roosevelt was enthralled by it. During their camping trip, Muir brought the president’s attention to how essential it was to stop the destruction of nature. Then and there, they created the fundamentals of Roosevelt’s conservation initiatives.