The lawyers noted that their statement covers only the period dating to 2005, when their firm, Morgan Lewis & Bockius, began representing Mr. Trump and the Trump Organization. It also leaves many questions unanswered, owing to the complexity of international finance, such as whether Mr. Trump or his firms received Russian income or loans from entities registered elsewhere.
The details in the letter are generally consistent with what Mr. Trump’s sons, Eric and Donald Jr., have said in recent interviews regarding income associated with Russian entities.
They acknowledged the considerable profit gained from the 2008 sale of Maison de L’Amitie, a sprawling beachfront estate in Palm Beach, Fla., which the Trump family acquired for about $41…