In 'Celtic MSS. in relation to the Macpherson fraud' by James Cruikshank Roger, the author delves into the controversial topic of the authenticity of Ossianic poetry attributed to James Macpherson. This scholarly work explores the Celtic manuscripts and their connection to the alleged deception perpetuated by Macpherson in his acclaimed works. Written in a meticulous and academic style, the book presents a thorough analysis of the literary context surrounding the Ossianic poems, shedding light on the discrepancies and forgeries that have sparked debates among scholars for centuries. Roger's attention to detail and critical examination of the evidence make this a valuable resource for scholars and enthusiasts of Celtic literature. Through a close examination of the manuscripts and historical records, Roger uncovers the intricate web of deception woven by Macpherson, challenging readers to reassess their understanding of this pivotal period in literary history.