Buy from Amazon
$27.00 $12.04
$21.67
$15.83
$10.00
Apr
Jun
Aug
Oct
Dec
Feb
Apr
2015
2016
$16.88, Feb 5 - Mar 9 $15.80, Feb 5 - Mar 3 $12.05, Feb 5 - Feb 7 $16.88, Feb 5 - Mar 9 $15.80, Feb 5 - Mar 3 $12.04, Feb 7 - Feb 11 $16.88, Feb 5 - Mar 9 $15.80, Feb 5 - Mar 3 $12.05, Feb 12 - Mar 3 $18.23, Mar 6 2:25 am $16.88, Feb 5 - Mar 9 $16.64, Mar 6 - Mar 10 $18.10, Mar 8 - Mar 9 $16.88, Feb 5 - Mar 9 $16.64, Mar 6 - Mar 10 $18.23, Mar 10 6:18 am $16.92, Mar 10 - Apr 24 $16.64, Mar 6 - Mar 10 $18.10, Mar 12 - Mar 17 $16.92, Mar 10 - Apr 24 $16.63, Mar 12 12:50 pm $18.10, Mar 12 - Mar 17 $16.92, Mar 10 - Apr 24 $16.64, Mar 14 - Mar 17 $18.65, Mar 19 10:00 pm $16.92, Mar 10 - Apr 24 $16.06, Mar 19 - Mar 21 $18.10, Mar 21 - Apr 4 $16.92, Mar 10 - Apr 24 $16.06, Mar 19 - Mar 21 $18.10, Mar 21 - Apr 4 $16.92, Mar 10 - Apr 24 $16.05, Mar 23 - Mar 31 $18.10, Mar 21 - Apr 4 $16.92, Mar 10 - Apr 24 $16.04, Apr 3 4:10 am $18.10, Mar 21 - Apr 4 $16.92, Mar 10 - Apr 24 $16.02, Apr 4 12:09 pm $18.23, Apr 7 - Apr 22 $16.92, Mar 10 - Apr 24 $15.96, Apr 7 3:46 am $18.23, Apr 7 - Apr 22 $16.92, Mar 10 - Apr 24 $15.93, Apr 9 9:24 pm $18.23, Apr 7 - Apr 22 $16.92, Mar 10 - Apr 24 $15.90, Apr 12 3:47 pm $18.23, Apr 7 - Apr 22 $16.92, Mar 10 - Apr 24 $15.86, Apr 15 12:17 pm $18.23, Apr 7 - Apr 22 $16.92, Mar 10 - Apr 24 $15.82, Apr 18 2:12 am $18.23, Apr 7 - Apr 22 $16.92, Mar 10 - Apr 24 $15.80, Apr 20 5:07 pm $18.23, Apr 7 - Apr 22 $16.92, Mar 10 - Apr 24 $15.78, Apr 22 2:15 am $18.22, Apr 24 10:55 pm $16.92, Mar 10 - Apr 24 $15.76, Apr 24 10:55 pm $18.22, Apr 26 - Jul 8 $16.92, Apr 26 - Apr 29 $15.74, Apr 26 2:12 pm $18.22, Apr 26 - Jul 8 $16.92, Apr 26 - Apr 29 $15.70, Apr 29 11:23 am $21.93, Apr 30 - May 8 $18.22, Apr 26 - Jul 8 $15.67, Apr 30 9:36 pm $21.93, Apr 30 - May 8 $18.22, Apr 26 - Jul 8 $15.60, May 3 2:14 pm $21.93, Apr 30 - May 8 $18.22, Apr 26 - Jul 8 $15.45, May 4 9:44 pm $21.93, Apr 30 - May 8 $18.22, Apr 26 - Jul 8 $15.38, May 8 10:45 am $21.71, May 11 - May 19 $18.22, Apr 26 - Jul 8 $15.16, May 11 7:44 pm $21.71, May 11 - May 19 $18.22, Apr 26 - Jul 8 $15.12, May 15 3:41 am $21.71, May 11 - May 19 $18.22, Apr 26 - Jul 8 $16.40, May 19 - May 23 $21.76, May 23 - Jun 10 $18.22, Apr 26 - Jul 8 $16.40, May 19 - May 23 $21.76, May 23 - Jun 10 $18.22, Apr 26 - Jul 8 $16.26, May 27 8:42 pm $21.76, May 23 - Jun 10 $18.22, Apr 26 - Jul 8 $16.07, Jun 1 11:25 am $21.76, May 23 - Jun 10 $18.22, Apr 26 - Jul 8 $15.84, Jun 6 2:38 am $21.76, May 23 - Jun 10 $18.22, Apr 26 - Jul 8 $15.83, Jun 10 - Jun 14 $21.54, Jun 14 - Jun 17 $18.22, Apr 26 - Jul 8 $15.83, Jun 10 - Jun 14 $21.54, Jun 14 - Jun 17 $18.22, Apr 26 - Jul 8 $15.72, Jun 17 9:49 pm $21.59, Jun 21 - Jul 18 $18.22, Apr 26 - Jul 8 $15.85, Jun 21 4:19 pm $21.59, Jun 21 - Jul 18 $18.22, Apr 26 - Jul 8 $15.75, Jun 25 11:46 am $21.59, Jun 21 - Jul 18 $18.22, Apr 26 - Jul 8 $15.71, Jun 29 2:24 pm $21.59, Jun 21 - Jul 18 $18.22, Apr 26 - Jul 8 $15.75, Jul 3 7:29 pm $21.59, Jun 21 - Jul 18 $18.22, Apr 26 - Jul 8 $15.76, Jul 8 6:47 am $21.59, Jun 21 - Jul 18 $18.23, Jul 13 - Aug 28 $17.33, Jul 13 8:37 am $21.59, Jun 21 - Jul 18 $18.23, Jul 13 - Aug 28 $17.22, Jul 17 - Jul 29 $21.64, Jul 22 - Jul 29 $18.23, Jul 13 - Aug 28 $17.22, Jul 17 - Jul 29 $21.69, Aug 2 - Aug 9 $18.23, Jul 13 - Aug 28 $17.21, Aug 2 5:07 am $21.69, Aug 2 - Aug 9 $18.23, Jul 13 - Aug 28 $16.93, Aug 5 8:01 pm $21.69, Aug 2 - Aug 9 $18.23, Jul 13 - Aug 28 $16.84, Aug 9 2:42 pm $21.47, Aug 13 - Aug 20 $18.23, Jul 13 - Aug 28 $16.74, Aug 13 8:56 am $21.47, Aug 13 - Aug 20 $18.23, Jul 13 - Aug 28 $16.95, Aug 17 2:57 am $21.47, Aug 13 - Aug 20 $18.23, Jul 13 - Aug 28 $16.81, Aug 20 9:13 pm $21.52, Aug 24 - Aug 28 $18.23, Jul 13 - Aug 28 $16.67, Aug 24 2:07 pm $21.52, Aug 24 - Aug 28 $18.23, Jul 13 - Aug 28 $17.22, Aug 28 8:58 am $21.57, Sep 1 - Sep 12 $18.65, Sep 1 - Sep 28 $17.33, Sep 1 1:33 am $21.57, Sep 1 - Sep 12 $18.65, Sep 1 - Sep 28 $18.11, Sep 4 - Sep 16 $19.37, Sep 16 - Oct 22 $18.65, Sep 1 - Sep 28 $18.11, Sep 4 - Sep 16 $19.37, Sep 16 - Oct 22 $18.65, Sep 1 - Sep 28 $15.37, Sep 20 - Sep 28 $19.37, Sep 16 - Oct 22 $18.64, Oct 2 7:57 am $17.37, Oct 2 7:57 am $19.37, Sep 16 - Oct 22 $17.36, Oct 6 10:17 am $17.00, Oct 6 - Dec 6 $19.37, Sep 16 - Oct 22 $17.00, Oct 6 - Dec 6 $15.37, Oct 10 - Oct 18 $19.37, Sep 16 - Oct 22 $17.00, Oct 6 - Dec 6 $16.92, Oct 22 7:26 am $19.44, Oct 26 4:12 am $17.15, Oct 26 - Nov 11 $17.00, Oct 6 - Dec 6 $19.51, Oct 30 - Nov 7 $17.15, Oct 26 - Nov 11 $17.00, Oct 6 - Dec 6 $19.58, Nov 11 - Nov 15 $17.15, Oct 26 - Nov 11 $17.00, Oct 6 - Dec 6 $19.58, Nov 11 - Nov 15 $17.00, Oct 6 - Dec 6 $16.82, Nov 15 - Nov 24 $19.65, Nov 19 - Nov 26 $17.00, Oct 6 - Dec 6 $16.82, Nov 15 - Nov 24 $19.65, Nov 19 - Nov 26 $17.00, Oct 6 - Dec 6 $16.66, Nov 26 - Dec 1 $19.72, Dec 1 - Dec 6 $17.00, Oct 6 - Dec 6 $16.66, Nov 26 - Dec 1 $19.72, Dec 1 - Dec 6 $17.00, Oct 6 - Dec 6 $16.42, Dec 6 8:17 am $19.79, Dec 11 - Dec 26 $16.54, Dec 11 - Dec 21 $15.79, Dec 11 - Dec 26 $19.79, Dec 11 - Dec 26 $16.32, Dec 26 11:05 pm $15.79, Dec 11 - Dec 26 $27.00, Dec 31 - Feb 4 $18.55, Dec 31 3:00 pm $17.00, Dec 31 3:00 pm $27.00, Dec 31 - Feb 4 $18.50, Jan 5 8:40 am $18.50, Jan 5 8:40 am $27.00, Dec 31 - Feb 4 $18.34, Jan 10 5:38 am $18.30, Jan 10 5:38 am $27.00, Dec 31 - Feb 4 $18.10, Jan 15 4:11 am $17.99, Jan 15 - Jan 20 $27.00, Dec 31 - Feb 4 $18.21, Jan 20 4:27 am $17.99, Jan 15 - Jan 20 $27.00, Dec 31 - Feb 4 $17.92, Jan 25 4:59 am $17.91, Jan 25 4:59 am $27.00, Dec 31 - Feb 4 $18.52, Jan 30 5:00 am $17.71, Jan 30 5:00 am $27.00, Dec 31 - Feb 4 $18.59, Feb 4 - Feb 6 $17.64, Feb 4 7:02 am $24.30, Feb 6 - Feb 9 $18.59, Feb 4 - Feb 6 $17.58, Feb 6 9:25 pm $24.30, Feb 6 - Feb 9 $18.56, Feb 9 11:19 am $17.57, Feb 9 11:19 am $24.05, Feb 12 - Feb 23 $18.49, Feb 12 2:07 am $17.51, Feb 12 2:07 am $24.05, Feb 12 - Feb 23 $18.09, Feb 17 11:43 am $17.47, Feb 17 11:43 am $24.05, Feb 12 - Feb 23 $18.62, Feb 23 12:57 am $17.86, Feb 23 12:57 am $23.80, Feb 28 8:40 am $18.61, Feb 28 8:40 am $16.73, Feb 28 8:40 am $23.86, Mar 12 2:41 am $18.24, Mar 12 2:41 am $15.94, Mar 12 2:41 am $19.37, Mar 17 10:45 pm $18.06, Mar 17 10:45 pm $15.37, Mar 17 10:45 pm $19.17, Mar 29 10:53 am $17.89, Mar 29 10:53 am $15.17, Mar 29 10:53 am 47,400 1,060,116
1,171,875
781,250
390,625
Apr
Jun
Aug
Oct
Dec
Feb
Apr
2015
2016
Price Details
New
Last Seen
$19.17 Mar 29, '16
Highest
$27.00 Dec 31, '15
Lowest
$16.88 Feb 5, '15
Average
$20.87 (30d avg)
Added
Feb 5, 2015
3rd Party New
Last Seen
$15.17 Mar 29, '16
Highest
$18.59 Feb 4, '16
Lowest
$15.12 May 15, '15
Average
$15.56 (30d avg)
Added
Feb 5, 2015
3rd Party Used
Last Seen
$17.89 Mar 29, '16
Highest
$18.65 Sep 1, '15
Lowest
$12.04 Feb 7, '15
Average
$18.12 (30d avg)
Added
Feb 5, 2015
Sales Rank
30 day average: 434,246 427,961
Product Description
Profiles the lives of twenty-five African American inventors who made significant scientific contributions from the eighteenth century to modern times.
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