We present the reddening ( E ( V - I ) ) and Extinction maps in V -band ( A _ { V } ) and I -band ( A _ { I } ) for 48 Optical Gravitational Lensing Experiment II ( OGLE-II ) Galactic bulge ( GB ) fields , covering a range of -11 ^ { \circ } < l < 11 ^ { \circ } , with the total area close to 11 square degrees .
These measurements are based on two-band photometry of Red Clump Giant ( RCG ) stars in OGLE-II VI maps of GB .
We confirm the anomalous value of the ratio of total to selective extinction R _ { VI } \equiv A _ { V } / E ( V - I ) = 1.9 \sim 2.1 , depending on the line of sight , as measured by ( ) .
By using the average value of R _ { VI } = 1.964 with the standard deviation sdev = 0.085 , we measured E ( V - I ) , A _ { V } and A _ { I } , and we obtained extinction and reddening maps with a high spatial resolution of 26.7 ^ { \prime \prime } \sim 106.8 ^ { \prime \prime } , depending on the stellar density of each field .
We assumed that average , reddening corrected colours of red clump giants are the same in every field .
The maps cover the range 0.42 < E ( V - I ) < 3.5 , 0.83 < A _ { V } < 6.9 
and 0.41 < A _ { I } < 3.4 mag respectively .
The zero points of these maps are calibrated by using V - K colours of 20 RR Lyrae ab variables ( RRab ) in Baade ’ s window .
The apparent reddening corrected I -band magnitudes of the RCGs change by +0.4 mag while the Galactic coordinate l 
varies from +5 ^ { \circ } to -5 ^ { \circ } , indicating that these stars are in the Galactic Bar .
The reddening corrected colour of RRab and RCGs in GB are consistent with colours of local stars , while in the past these colours were claimed to be different .