There are multiple methods to acquire the real world coordinates of these control points. The most accurate is to use a known pre-existing control network surveyed in real world coordinate system [1,17]. At the same level of accuracy, a geodetic GPS can be used to obtain accurate coordinates for the control points. The problems of these two methods as stated by [13] are that many practitioners often do not have access to geodetic GPS receivers or may not have access to the necessary post-processing software and may work in areas far away of existing control network. Google Earth is a low-cost and readily accessible tool with relatively good spatial accuracy [18, 19]. It offers high resolution imagery from which, it may be possible to derive sufficient quality photo control points if ground features visible in the photo (e.g., fence corner, rockedge, etc.) can be accurately located in the field. The latest versions of ArcGIS offer a high resolution Bing Basemaps which can also be used to drivephoto control points ifground features visible in the photo can beaccurately located in the field. The most common is to use a simple, inexpensive, consumer-grade GPS (e.g., Garmin hand held, Smart-Phone, GPS card in field data collector. The accuracy of such devices is sufficient for purposes of GIS overlay at scales of 1:1000 or coarser [13]