Book support bracket
FIG. 1 is a perspective view of the book support bracket attached to a book shown in dashed lines; 
     FIG. 2 is a front end elevational view of the book support bracket illustrated in FIG. 1; 
     FIG. 3 is a bottom plan view of the book support bracket illustrated in FIG. 1; 
     FIG. 4 is a left side elevational view of the book support bracket of FIG. 1; 
     FIG. 5 is a rear end elevational view of the book support bracket illustrated in FIG. 1; and 
     FIG. 6 is a right side elevational view of the book support bracket illustrated in FIG. 1. 
     The broken line showing of the book in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.