- "Ann
Rohmer goes from on air to the air industry".
Toronto Star. [1]
Ruppenstein, Ann (August 6, 2009). "Rise and shine: Grad
wakes T.O. each morning"...
- Fire Department. p. 100. ISBN 9780738520841.
Retrieved 7 June 2023.
Ruppenstein, Andrew. "The
Golden Hydrant". the
Historical Marker Database. Retrieved...
-
Chemical Society. pp. 3–27. ISBN 978-0-8412-2602-9.
Bachmann F,
Reimer J,
Ruppenstein M,
Thiem J (2001). "Synthesis of
Novel Polyurethanes and
Polyureas by...
- Sea". Observer-Reporter. AP. 5
November 1985.
Retrieved 26
August 2016.
Ruppenstein,
Andrew (19
March 2009). "Humphrey the
Humpback Whale Marker". The Historical...
-
Historical Markers Database. 2020.
Retrieved February 2, 2023.
Andrew Ruppenstein, ed. (July 16, 2021). "Fort Hill at Waverly".
Historic Markers Database...
- Ontario. June 18, 2012.
Archived from the
original on
November 11, 2013.
Ruppenstein, Ann (August 21, 2012). "Unlikely Pair". mytowncrier.ca. Toronto, Ontario:...
- of Reid's
Records of
Berkeley (PDF) (Report).
Retrieved 2021-10-05.
Ruppenstein,
Andrew (2020-07-14). "Site of Reid's Records". The
Historical Marker...
- 1 GK GER
Fritz Herkenrath 2 DF GER
Willi Köchling 4 MF GER
Heinz Ruppenstein 5 DF GER
Walter Zastrau 6 MF GER
Dieter Wöske 9 FW GER
Franz Islacker...
- Journal. 21 (3): 175–183. doi:10.17953/amer.21.3.q050756h25525n72.
Andrew Ruppenstein (16 June 2016). "The
First Landing of
Filipinos in the
Continental United...
-
States Geological Survey,
United States Department of the Interior.
Ruppenstein,
Andrew (2016). "Caples Lake
Historical Marker". www.hmdb.org. Retrieved...