This article describes improved measurements by CLEO of the B-0-->D-s(+) D*
(-) and B-0-->D-s(*+) D*(-) branching fractions, and first evidence for the
decay B+-->D-s(()*()+) (D) over bar**(0), where (D) over bar**(0) represen
ts the sum of the (D) over bar (1)(2420)(0), (D) over bar (2)*(2460)(0), an
d (D) over bar (1)(j = 1/2)(0) L = 1 charm meson states. Also reported is t
he first measurement of the D-s*(+) polarization in the decay B-0-->D-s*D+*
(-). A partial reconstruction technique, employing only the fully reconstru
cted D-s(+) and slow pion pi (-)(s) from the D*(-)-->(D) over bar (0)pi (-)
(s) decay, enhances sensitivity, The observed branching fractions are B(B-0
-->Ds+D*(-)) = (1.10+/-0.18+/-0.10+/-0.28)%, B(B-0-->D-s*(+) D*(-)) =(1.82/-0.37+/-0.24 +/-0.46)%, and B(B+-D-s(()*()+)(D) over bar**(0)) = (2.73+/-0
.78+/-0.48+/-0.68)%, where the first error is statistical, the second syste
matic, and the third is the uncertainty in the D-s(+)-->phi pi (+) branchin
g fraction. The measured D-s*(+) longitudinal polarization, Gamma (L)/Gamma
= (50.6+/-13.9+/-3.6)%, is consistent with the factorization prediction of
54%.