This vintage image shows a woman ironing her clothes the old fashioned way. Before electricity, sadirons were commonly used for the job. The iron would have to be heated on a wood or coal burning stove until it was hot enough to take creases out of the clothing.
Here is a black and white clip art version of the image.
The image is from the August – September 1910 issue of The Boston Cooking School Magazine. Click on images to enlarge.