I just finished a six month project to kitbash a produce warehouse from three Lionel Electrical Substation kits. Penn Produce Co. is a fictitious company. I created and printed my own decals.
I replaced "wood" (plastic) doors with rollup doors. Because the rear of the building will not be seen, I covered the rear wall with brick to cover the 20 windows!
Exterior lights over the doors are old Lionel street lights that I cut down for my purpose.
Next step is to add more creates/boxes/pallets.