  Assuming that the nuclear magnetic resonance (NMR) signal from a $^{13}$C
isotope enriched layer of graphene can be made sufficiently intense to be
measured, we compute the NMR\ lineshape of the different crystals ground states
that are expected to occur in graphene in a strong magnetic field. We first
show that in nonuniform states, there is, in addition to the frequency shift
due to the spin hyperfine interaction, a second contribution of equal
importance from the coupling between the orbital motion of the electrons and
the nuclei. We then show that, if the linewidth of the bare signal can be made
sufficiently small, the Wigner and bubble crystals have line shapes that differ
qualitatively from that of the uniform state at the same density while crystal
states that have spin or valley pseudospin textures do not. Finally, we find
that a relatively small value of the bare linewidth is sufficient to wash out
the distinctive signature of the crystal states in the NMR line shape.
