in an abbreviated form known as the "Short Count", which only identified an event within a span of about 260 years, it was difficult to pin down in which particular span an event referred to in the inscriptions occurred. Towards the end of the project Morley's work on these was to be superseded somewhat by a more-comprehensive analysis made by Hermann Beyer in 1937. In this work, Beyer would note: I frequently have differed with the opinions of Dr. Sylvanus G. Morley. This is easily explained by the fact that he is one of the few archaeologists who have studied the hieroglyphs of Chichen Itza. While I agree with his results on the inscriptions of the Old Empire cities which contain many dates and time periods, I find that his method of dealing solely with calendrical matter fails at Chichen Itza, since there are but few hieroglyphs of that nature. The later years of the project would increasingly concentrate on completing the restorative work on the principal structures, for Morley always had an eye on the dual purpose of the project: to research, but also rebuild to generate the promised revenue from tourism. Result summary The net research result of their excavations revealed Chichen Itza to be an unusual mixture of building styles: not only was there a wide variety of Maya styles such as Puuc, Rio Bec and Chenes, but a significant presence of Mexican influences such as El Tajín, but more particularly Toltec. The evidence indicated that the site had been inhabited since at least the mid-Classic, but that a particular florescence had occurred in the Post-Classic, when the site was apparently a major power. From the combined results of their work, that of others, and some documented tales of contact-era Maya peoples, a view was formed that Chichen Itza had actually been invaded and conquered sometime in the 10th century by Toltec warriors from the far west, who maintained their hold over the local Maya for another century or so, only in turn to be replaced by a later mixed Maya-Mexica group known as the Itza. Later evidence suggested that the actual year of this invasion was 987, and identified its leader with a legendary Toltec ruler called Topiltzin Ce Acatl Quetzalcoatl after the Mesoamerican deity Quetzalcoatl (K'ulk'ulkan in Yucatec). Morley was in general opposed to ideas that other external groups had influenced the Maya, but in