A friend & fellow DM sent me this beautiful link to a public domain book on mazes and labyrinths through history from 1922.

Mazes & Labyrinths.

And some photos to whet your appetite:

Click image for larger version. 

Name:	mazes1.jpg 
Views:	173 
Size:	117.3 KB 
ID:	48811
Click image for larger version. 

Name:	mazes2.jpg 
Views:	352 
Size:	166.6 KB 
ID:	48812
Click image for larger version. 

Name:	mazes3.jpg 
Views:	495 
Size:	210.7 KB 
ID:	48813
Click image for larger version. 

Name:	mazes4.jpg 
Views:	220 
Size:	256.0 KB 
ID:	48814
Click image for larger version. 

Name:	mazes5.jpg 
Views:	468 
Size:	231.8 KB 
ID:	48815
Click image for larger version. 

Name:	mazes6.jpg 
Views:	358 
Size:	229.0 KB 
ID:	48816