From posting on PABERKS-L@rootsweb.com:

The Tulpehocken" originally referred to an area rather than a single
town. The area lay along the Tulpehocken Creek that drains a valley 
west of present-day Reading, Berks Co. PA. This small stream has its
headwaters a few miles west of Myerstown and runs eastward to
Womelsdorf. It was in the upper reaches of this stream that the first
German settlers made their homes in The Tulpehocken in the 1720s. At
Womelsdorf the stream  turns sharply north 4.5 miles, then runs eastward
again for about 2 miles, and then flows southwest for about 12 miles to
its confluence with the Schuylkill River at Reading. The settlers who
came into The Tulpehocken in the 1720s were in the majority Lutherans
and in the minority German Reformed. They, or their parents, had
emigrated from the Palatinate in SW Germany. For some three decades
Womelsdorf served as a primary point for social, cultural, and
commercial activity in The Tulpehocken. Since the days of its founding
in 1748 Reading has become a larger center of population and activity
for this area, so that one will sometimes see it stated that Tulpehocken
was "in Reading" or "at Reading." In general terms this is true, but in
precise terms "The Tulpehocken" lay in a valley defined by the
Tulpehocken Creek and extending as far as 15 or 20 miles west of
Reading. Actually the upper reaches of The Tulpehocken lie across the
county line in Lebanon Co.
 
The course of the Tulpehocken Creek is shown by the red dots on the map
at this Website:
http://geonames.usgs.gov/pls/gnis/MapMultPoint?id=1189912
 
If you are seeking records on ancestors in The Tulpehocken before 1740
you will probably have to rely mainly on the private ledgers of
individual ministers. For later dates you may have better luck searching
parish records, tax records, land records, or other civil records.
 
The earliest ministers in this area were:
 
Lutheran:
	John Bernard van Dieren
	Anthony Jacob Henkel
	John Valentine Kraft
	Casper Leitbecker
	(John) Caspar Stoever the Younger
	Nicholas Kurtz

 
Reformed:
	John Philip Boehm
	Peter Miller
	Henry Goetschy
	Dominicus Bartholomae
	Caspar Schnorr