Charles M. Russell, Planning the Attack (The Wagon Train) (1902), watercolor, 9 x 12. Estimate: $150,000-$250,000. ← Previous Charles M. Russell, Planning the Attack (The Wagon Train) (1902), watercolor, 9 x 12. Estimate: $150,000-$250,000. Charles M. Russell, Planning the Attack (The Wagon Train) (1902), watercolor, 9 x 12. Estimate: $150,000-$250,000.