A handful of American lumber barons’ heirs stand to cash in for well into the near future, as investment banks anticipate Canada’s biggest forest products companies will expand south of the border by targeting privately owned timberlands and sawmills. The North American lumber market is booming, in large part due to the increase in home construction. Canada’s largest companies, including B.C.-based West Fraser Timber Company Ltd., Canfor Corp and Interfor Corp, are on the hunt and with cash. Last year set new records for lumber company acquisitions compared to the previous five years ...