Also, unscrew each fuse, one at a time, and check for pennies or washers behind it... people really did do that and it really does start fires.You might consider replacing the fuse box with a modern breaker panel. 

MLS Number:        23888    List Price:        $88,900    Street #:        101    Street Name:        Bellaire    City:        Vicksburg    State:        MS    Zip Code:        39180    Subdivision:        City-Vicksburg    Area:        Vicksburg    Apx Acres:        0.7    Apx GLA/SqFt:        1311    # Bedrooms:        3    # Full Baths:        2    # Half Baths:        0    Apx Year Built:        1965    Type:        Single Family, < 1 acre    Style:        1 StoryExterior:        Brick, Wood Siding    Roof:        Composition Shingle    Foundation/Basement:        Slab, Full    Flooring:        Carpet, Vinyl Sheet    Walls:        Panel, Sheet Rock    Auto Capacity/Garage Type:        Two, Attached, Carport    Heating:        Central    Cooling:        Central Air    Water Heater:        Electric    Water/Sewer:        City Water, City Sewer    Gas:        Natural    Fireplace:        None    Laundry:        Electric, Inside    Interior Features:        8 ft Ceiling    Other Rooms:        Laundry Room, Master Bath    Appliances:        Dishwasher, Garbage Disposal, Stove, Ventahood    Exterior Amenities:        None    Fencing:        None    Patio/Porch:        Porch    

You may also need to add an additional panel which will cost around $1500. 

French Mocha on walls , and white enamel on all doors, jambs, moldings, cabinets,  repaired any damage to walls, replaced doors that were either gone or damaged. all 6 panel now.    

In the short term, solar panels don't seem logical.

Do youi need new electric Panels etc?

They have added solar panels on the back of the roof to help but everything I've read has been to stay away from a property that doesn't have separate metering. 

Breece Veneer & Panel Co., 232 F .2d 319.

It's Armored BX cable, but on fuses panels, and it's 60 Amps of service to each unit, and 30 Amps (might be 60, but there was a 30 Amp fuse present) for the common (hallway and outdoors lights, as well as furnace, washer, and gas dryer). 

Here's the link - the comment is around the 23 minute mark: http://www.jasonhartman.com/cw-381-meet-the-masters-lender-panel/