This article is being edited and may have grossly inaccurate statements.

A
=
P
i
∗
r
2
{\displaystyle A=Pi*r^{2}}
2
3
4
{\displaystyle {2^{3}}^{4}}
S
≡
e
−
2
(
2
π
σ
/
λ
)
2
{\displaystyle S\equiv {e^{-2(2\pi \sigma /\lambda )}}^{2}}
<
s
u
p
>
−
2
(
2
π
θ
)
<
s
u
p
>
2
{\displaystyle <sup>-2(2\pi \theta )<sup>2}
- The Future of the American Negro - 1899
- The Negro in the South - with W.E.B. Du Bois - 1907
- Tuskegee & Its People - (editor) - 1905
- Up from Slavery - 1901
- Working With the Hands - 1904