I don't believe so. The field of stars is always in the upper left corner. Perhaps you are looking at old photos that were printed incorrectly, making them flipped.

I think the stars on the left of the flag is the most common way of seeing it, but there is also a "right flag" that is used on American military uniforms and I think it has changed over time as to whether it is used or not. Here's a quoted from: "Flag Rules and Regulation" on the Betsy Ross Home Page (http://www.ushistory.org/betsy/flagetiq.html) ~~~ What is the proper way to wear a flag patch on one's shoulder sleeve? To wear our country's flag properly, the field of stars is worn closest to your heart. Further, when worn on the sleeve of a military uniform, the flag should appear to be advancing and not retreating. Thus, if your patch is to be worn on your LEFT sleeve, use a left flag (normal). For patches worn on your RIGHT sleeve, use a "right" or "reversed field" flag. Since the Flag Rules do not specifically address the positioning of the patch, a decision is left to the discretion of the organization prescribing the wear. Some elect to use the "left" flag on both sleeves. [Note: many states and cities have ordinances pertaining to the use of the flag; you may wish to contact the Attorney General of your state or the City Attorney's office regarding this matter.] If you are planning to wear only one patch, it is recommended that you wear a "left" flag on your left sleeve. Military guidelines specify that in support of joint or multi-national operations (as in Iraq), the "right" flag is worn on the right sleeve (see picture), 1/4" below the shoulder seam or 1/8" below any required unit patches. (Class A uniform excepted.) Source: Army Website FAQs