Dracula Dictionary May 31st

"and with it all my notes, my memoranda, relating to railways and travel, my letter of credit"
Memoranda:
Written reminders
Letter of credit:
A letter from a bank allowing the owner to draw a stated amount of money from that bank, its branches, or other associated banks or agencies. (essentially an old-timey credit card)

"and I made search of my portmanteau and in the wardrobe"
Portmanteau:
A large leather suitcase that opens into two hinged compartments.

"The suit in which I had travelled was gone, and also my overcoat and rug"
Rug:
A piece of thick, warm fabric or fur used as a coverlet or lap robe.