He is credited with the expansion of the collection of antiquities of the museum .
He was also involved in a number of controversies including a tax manipulation scheme to buy artifacts of dubious provenance and purchase of a number of artifacts widely considered to be fake .
He is credited with the expansion of the collection of antiquities of the museum , but he was also involved in a number of controversies including a tax manipulation scheme to buy artifacts of dubious provenance and purchase of a number of artifacts widely considered to be fake .