This section is from the book "Furniture A Girl Can Make", by William W. Klenke. Also available from Amazon: Furniture A Girl Can Make.
You will find the window box refrigerator a very handy and most desirable article to have during the cooler months of the year. Regardless of the electric refrigerator you may have, there are always many things you will want to keep in such a box. As a matter of fact during the winter months you can even dispense with the use of your ice box or electric refrigerator, if you place this window box refrigerator outside of a north window, where the sun cannot strike it.
Like many of the projects shown in this book, this model can also be made out of a discarded packing box that is made of thick lumber.
Make this box ample in size not less than 30" long, 20" deep and at least 15 high. So as to furnish extra shelf space, it is a good idea to run a narrow shelf across the box, about half way up.

Step No. 1: Cut out the pieces for the two ends, back and bottom.
Step No. 2: Nail the back pieces to the ends with common wire nails about 2" long; now nail the bottom in place. Note the front is kept open so as to give access to the interior of the box.
Step No. 3: Cut out a cover to overhang the sides a little. Securely nail this cover to the box part with common wire nails.
Step No. 4: Cover the top with oil cloth or other waterproof material.
Step No. 5: Paint this box with three coats of oil paint in a color to match the rest of the house.
Step No. 6: Make two brackets out of wood, or purchase metal brackets from the hardware store and then securely fasten these in place. The box is placed to rest on the window sill. Securely hook this box to the window frame so that it cannot easily be removed or be driven out of place by any wind or storms.
If you mix your own paint, the first coat should be made with about one-half turpentine and one-half raw linseed oil, and a little drier. After this coat, putty up all nail holes or open joints. The second coat should contain less turpentine and more oil and just a little drier. The third coat should have no turpentine at all; use nothing but raw linseed oil and a little drier. Color of course, is added to all coats, if you prefer to use a color.
As a protection against flies, insects or the house cat, it will be advisable to put either cheese cloth or screen wire across the front; this of course, must be fastened in place in such a manner that you can easily have access to the contents of the box when necessary.
 
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