Howland, Type 50 A Cistern Howland, Type 50 B Well Howland, Type 50 C Howland, Type 50 D Howland, Type 51 A Fill Howland, Type 51 B Pit Howland, Type 51 C
Howland, no. 803, type 56 Howland, no. 781, type 54 D Howland, no. 761, type 53 Howland, no. 826 Howland, no. 665, type 49 B Howland, no. 577, type 44D Howland, no. 664 Howland, no. 783, type 54 D Howland, no. 661, type 49 A Howland, no. 808, type 58 B Howland, no. 809, type 58 B