1-2-3 Find this cache please! Mystery Cache

Here you will see a memorial of those who served in the First World Ward. This memorial was dedicated by the Omaha Chapter of American War Mothers.

The Cache is not at the posted coordinates. The final cache is big enough for trackables and trinkets. The final cache is in a public park, so please abide by park open times.

All the caches are within a quarter mile of each other.

First Time Find: Foreign coins in a cufflink bag

To solve for Phase 2. Please substitute the letters for their location in the alphabet (i.e. A=1; Z=26). You will need to use the Ottendorf Cipher to solve for the coordinates. Use only the stone monument between the drinking fountains. Spaces count as a location. (i.e. 'This is my example' char 5, 8, 11)
Phase 2 coordinates: 41°15'AB.C"N 95°58'DE.F"W

A (1-8-1) + (1-7-5)

B (1-3-8)

C (1-1-6) - (1-1-4) - (1-6-5)

D (1-2-7) - (1-2-6)

E (1-4-17) + (1-4-12) - (1-7-7)

F (1-9-7) - (1-9-3)

Phase 2: Inside this micro cache (sample oil bottle) are the coordinates for the final cache.

Phase 3: This cache Is big enough for trackables and trinkets.