Plans for the sale of timber from the O. and C. and public lands will be developed annually. Suggestions from prospective purchasers of such timber may be received to assist in the development of a sound annual timber sale plan. Such plan may be advertised in a newspaper of general circulation in the area in which the timber is located. Such advertisement shall indicate generally the probable time when the various tracts of timber included in the plan will be offered for sale, set-asides if any, and the probable location and anticipated volumes of such tracts. The authorized officer may subsequently change, alter or amend the annual timber sale plan. [35 FR 9785, June 13, 1970]