Cheng's Article in Arts and Entertainment

244 Something About Oil Painting Cleaners
It isn't uncommon for an oil painting to start collecting dirt and debris over time, even when it is hung on display in a safe place. Because an oil painting is tricky to work with, many recommend that a professional conservator clean it in order to prevent damage. It isn't impossible for you to clean your own oil painting, though, with some practice and proper instruction.
Posted on Sep-09-2011

606 Determine a Valuable Oil Painting
Perhaps lurking in your attic somewhere is an old oil painting -- a family heirloom you think has some value. Or you spy an epic landscape oil painting at the neighborhood garage sale that you believe may be worth something. Determining its value is helpful for many reasons, such as for insurance purposes, possible donation to a museum or to sell outright on your own in the current art market.
Posted on Sep-05-2011