  We introduce the set of $n$-photon coherent states and the set of $n$-photon
squeezed coherent states and study their collapse and revival and compare their
behavior with the collapse and revival of the corresponding zero-photon
coherent states and zero-photon squeezed coherent states, respectively. The set
of $n$-photon squeezed coherent states ($n=0,1,2,\cdots$) forms a basis of the
Hilbert state of photons and may be of some interest. We notice that the
presence of a few extra photons in the $n$-photon states as compared to the
corresponding zero-photon states makes a large difference in the behavior of
their collapse and revival. This indicates the large effect that a few extra
photons makes in the $n$-photon states as compared to the corresponding
zero-photon states in their collapse and revival.
