McArthur, Bruce (2020). "Interlake sailboat". sailboatdata.com. Archived from the original on 13 October 2020. Retrieved 13 October 2020.
McArthur, Bruce (2020). "Francis Sweisguth". sailboatdata.com. Archived from the original on 13 October 2020. Retrieved 13 October 2020.
McArthur, Bruce (2020). "Customflex (USA)". sailboatdata.com. Archived from the original on 2 September 2020. Retrieved 13 October 2020.
Interlake Sailing Class Association (June 2004). "Plans". interlakesailing.org. Archived from the original on 13 October 2020. Retrieved 13 October 2020.
Interlake Sailing Class Association (June 2004). "Plans". interlakesailing.org. Archived from the original on 13 October 2020. Retrieved 13 October 2020.
sailboatdata.com
McArthur, Bruce (2020). "Interlake sailboat". sailboatdata.com. Archived from the original on 13 October 2020. Retrieved 13 October 2020.
McArthur, Bruce (2020). "Francis Sweisguth". sailboatdata.com. Archived from the original on 13 October 2020. Retrieved 13 October 2020.
McArthur, Bruce (2020). "Customflex (USA)". sailboatdata.com. Archived from the original on 2 September 2020. Retrieved 13 October 2020.