wgrosz

You will need this style brake drum puller. Using three of your lug bolts you mount it to the hub. Loosen the center nut but do not remove it. Tighten the remover down and apply some pressure. Depending on how tight the drum is it might require some time under pressure and maybe heat. Just slowly keep it tight until it pops free. It might take a day or more if it's extremely tight.

Ross Miller from Speedwell garage in Maryland has a video on packard distributor installation

Actually that is a Berkshire The 4-6-4 wheel arrangement is a Hudson