Though they did a lot of Roman episodes on Time Team, it wasn't until until series 9, episode 12 that any volume of the Loeb Classical Library got screen time, viz. Suetonius on Vespasian's conquest of the Isle of Wight.
Tony does wave around the red Liverpool University Press Vegetius in series 1, episode 2. And Robin Bush reads from the Penguin Life of King Alfred in series 10, episode 8. He too can be seen following the text with his finger as he reads, a thing nobody over the age of six would do except for television.
And he used a highlighter. Guy de la Bédoyère glances toward a Loeb Dio Cassius on the table in front of him in series 11, episode 5, but it doesn't get a closeup because in the next instant Carenza is pointing at a map, and you can't have two finger shots in row, although I've done it above.