"Some time later, Campbell believes, someone varnished the murals with an unknown material that had yellowed substantially; the blue snow beneath the woolly mammoths looked more like a green golf course. Standard solvent mixtures failed to remove the discolored layer, so the conservators developed a technique of swelling it with solvent vapors, then painstakingly rubbing it off."

—Richard Milner,
The Living Museum

"Three of the murals that languished in storage were too badly damaged to be rescued within the present budget. Of the original group, however, Reindeer and Mammoths in Winter on the River Somme (1916), which measures nine by fifty feet, has been completely repaired, restored, and remounted in the refurbished Osborn Hall."

—Richard Milner,
The Living Museum