Roy Norton 
The Glyphs [EPUB ebook] 

Who or what are glyphs? will be your first question, probably. They are records carved on stone by a lost people, in this case the Mayas of Central America, a race which achieved a civilization equal to that of the Egyptians, and thousands of years before them! In this story of Norton’s there is a little band of daring adventurers who, fascinated by the reading of rare glyphs, go halfway round the world in search of the hidden metropolis of the ancient Mayas.