What type of lawyer do I need to sue my former landlord for illegal possession of my property and illegal lock out? The state is PA delaware...

Landlord/Tenant law is tricky and varied from state to
state.  Assuming this was an apartment, the value of the total property still inside the
apartment might be less than $5000, and if so, all you need to do is file a case in
small claims court.  This way you could file a court case and only consult a lawyer as
opposed to retaining one for the whole lawsuit.

The
attorney you talk to can tell you which specific laws apply, and you should also
consider whether or not there was any weather damage to your property left outside when
you come up with a damage total.  In small claims court, you won't win any judgement for
mental anguish, but you may be able to recover the charges for the hotel. Your lawyer
can advise you on this too.

As for the type of lawyer, you
might try to find one that specializes in property or landlord/tenant law.  Simply call
and ask an attorney, and if they cannot help you, they can usually refer you to one who
can.