LINQ Query help needed in where clause

DataContext db = new DataContext

public static IQueriable<class1> QMethod( // You could use anonymous types or return a DataTable as in the example above
  DateTime fromDate,
  DateTime toDate,
  int parcelStatus,
  DataContext db = null) // I like staggered queries so this is habit
{
    if(db==null)
      db = new DataContext();

    return db.ParcelsHistories
      .Join(
        db.tbl_PackageStatus,  //First Join (i'll use your table alias ie: a,b...)
        a=>a.ParcelCode,       //ParcelsHistories join field
        b=>b.packCode,         //tbl_PackageStatus join field
        (a,b)=> new {a,b})     //new anonymous type 
      .Join(db.Stations,
        n=>n.b.boxMachineName, //I used 'n' for the anon type.  Within this method it's members are known so will appear in intelisense
        c=>c.StationCode,
        (n,c)=>new{n.a,n.b,c}) //now we have access to all fields.  Nothing has been selected yet and our where clauses will refine these joins for us.  Let Linq do the work ^_^
      .Where(  //All the where clauses (only just noticed they are all on table 'a' so I could have put these before the first join.  The SQL query that linq produces will be identical in either case
        n=>n.a.StatusDate > fromDate
        && n.a.StatusDate <= toDate
        && n.a.ParcelStatus == parcelStatus)
      .Select( //Select the data into a known type so that any other class / method can access the data without having to worry about anon type access trickery
        n=> new Class1{ //.Net3.5 trick.  Could also use a class constructor
          ParcelCode = n.a.ParcelCode,
          StatusDate = n.a.StatusDate,
          boxMachineName = n.b.boxMachineName,
          StationName = n.c.StationName,
          ParcelStatus = n.a.ParcelStatus,
          newStatus = n.b.newStatus,
          storedPackType = n.b.storedPackType,
          PhoneNo = n.b.PhoneNo}
      )

/*
* No query is performed on the database yet.  This method returns an IQueriable object 
* that contains no data.  You can further add the the query after is has been returned.
* The query is only performed when you use an extension method on an IQueriable object 
* such as .ToList(), .FirstOrDefault() or .Count() and many more, although those last
* two will change the SQL query to make it more efficient.  .Count() will ignore your 
* selection criteria for eg.
* You could have this method return a List and call .ToList() on the end of the return.
* That would have the effect of performing the query there and then and returning the
* results in a List<class1>.  Don't forget to change the return type ^_^
*/        
}