Ruins of an Indo-Greek temple near Jehlum, found by General Ventura of the Sikh Khalsa Army of the Sikh Empire, ca.1838

General Ventura, the Italian General of the Khalsa was himself quite an amateur archaeologist, he lead expeditions that were the earliest finds of Indo-Greek, and Kushan artefacts, that's kind of first excavations in the subcontinent under a non-British government. Published his sketches in Calcutta with the help of James Prinsep, who deciphered Brahmi & Kharoshthi scripts, of an Indo-Greek Temple from nearby Jhelum, Ventura reportedly excavated them and took them to Lahore. You can see the Greek Columns with later-era inscriptions in Arabic of Allah, probably done by someone centuries after the Temple had collapsed and Indo-Greeks disappeared into oblivion from the memory of the people. All of this information was published in the Journal of the Asiatic Society of Bengal, in 1838.