Hello,<br /><br />Thank you for editing my document (70131). I wanted to double check that the following use of the preposition "of" is not a typo. I have not seen such expressions before.<br /><br />Assisting him in his research published as the books <strong>of</strong> Collapse of an Empire and Russia: A Long View was a memorable period of my career at the institute.<br /><br />Thanks.