  The $^{2}$H$(e,e'p)n$ cross sections have been measured at negative
4-momentum transfers of $Q^{2} = 4.5\pm0.5$ (GeV/c)$^{2}$ and $Q^{2} =
3.5\pm0.5$ (GeV/c)$^{2}$ reaching neutron recoil (missing) momenta up to
$p_{\mathrm{r}}\sim$1.0 GeV/c. The data have been obtained at fixed neutron
recoil angles $5^{\circ}\leq\theta_{nq}\leq95^{\circ}$ with respect to the
3-momentum transfer $\vec{q}$. The new data agree well with the previous data
which reached $p_{\mathrm{r}}\sim550$ MeV/c. At $\theta_{nq}=35^{\circ}$ and
$45^{\circ}$, final state interactions (FSI), meson exchange currents (MEC) and
isobar configurations (IC) are suppressed and the plane wave impulse
approximation (PWIA) provides the dominant cross section contribution. The new
data are compared to recent theoretical calculations, and a significant
disagreement for recoil momenta $p_{\mathrm{r}}>700$ MeV/c is observed.
